On average, the recorded minimum temperature is 38°F. The rainy period of the year lasts for 11 months, from August 13 to July 15, with a sliding 31-day rainfall of at least 0.5 inches. Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). The calmer time of year lasts for 7.4 months, from March 17 to October 28. Daylight saving time (DST) is observed in Portland during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1. Portland experiences some seasonal variation in monthly liquid-equivalent snowfall. The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. The state's largest annual snowfall on record, 903 inches (2,290 cm), occurred at Crater Lake in the Cascades in 1950. The state's largest annual snowfall on record, 903 inches (2,290 cm), occurred at Crater Lake in the Cascades in 1950. The wind is most often from the south for 1.0 weeks, from January 13 to January 20; for 2.1 months, from February 4 to April 6; and for 2.7 months, from October 4 to December 26, with a peak percentage of 49% on November 17. Find the best time to go to Portland (Oregon). In rare years, the thermometer dips to 20 °F ( … To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Download the data here. The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands. precip. To characterize how pleasant the weather is in Portland throughout the year, we compute two travel scores. Autumn in Portland is a delightful time to visit Portland, with warm days, a mild climate, clear skies and cool nights. The numbers here describe what the weather in Portland, Oregon was like for every year since 2010. What's The Average High Temp in Oregon? Average temperatures and precipitation amounts for more than 145 cities in Oregon. On August 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 82% of the time, and overcast or mostly cloudy 18% of the time. The hottest day on record was February 29, 1988 when the temperature recorded was 71.1°F. Portland averages 6 days in December when the thermometer reaches into the 50s °F (over 10 °C). The figure below presents a compact representation of key lunar data for 2020. We assume no responsibility for any decisions made on the basis of the content presented on this site. Daily Oregon HAM Radio Operators Weather Report; Daily Temps/Precip/Snowfall: Portland ( 1940-2019, csv file) Daily Temps/Precip/Snowfall: Astoria ( … The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year. The hottest day on record was July 2 1942 when the temperature hit 107.2°F. Portland Weather in August - Temperature, ... Below are average maximum temperatures at popular destinations in Oregon in … Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. The windier part of the year lasts for 4.6 months, from October 28 to March 17, with average wind speeds of more than 5.3 miles per hour. The brighter period of the year lasts for 2.8 months, from May 29 to August 23, with an average daily incident shortwave energy per square meter above 6.0 kWh. Included are summary overview charts followed by 146 year-to-year graphs depicting daily temperatures, temperature anomalies, and precipitation. Average Weather in Portland Oregon, United States. Within 10 miles also contains very significant variations in elevation (1,253 feet). Time zones for airports and weather stations are provided by AskGeo.com . While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. The time of year with cooler water lasts for 4.2 months, from December 8 to April 15, with an average temperature below 51°F. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). The percentage of time spent in various temperature bands. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. Shortwave radiation includes visible light and ultraviolet radiation. Graphical Climatology of Portland, Oregon: Daily Temperatures and Rainfall, by Year (1875 – Present) The following is a graphical climatology of Portland, Oregon temperatures and precipitation, from 1875 into 2020. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Portland area. Portland, Oregon Climate - 97209 Weather, Average Rainfall, and Temperatures This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. In 2020, the shortest day is December 21, with 8 hours, 42 minutes of daylight; the longest day is June 20, with 15 hours, 41 minutes of daylight. The highest monthly average temperature in Portland for August is 70 degrees; The lowest monthly average temperature in Portland for December is 40 degrees; The most monthly precipitation in Portland occurs in November with 6.2 inches; The air quality index in Portland is 24% better than the national average For each station, the records are corrected for the elevation difference between that station and Portland according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Mount St. Helens, a highly active volcano 50 miles (80 km) northeast of the city in Washington state, is easily visible on clear days and is close enough to have dusted the city with volcanic ash after its eruption on May 18, 1980.The rocks of the Portland area rang… Find out how often it rains, snows, and the gets cold or hot in Portland. Average Weather in November in Portland Oregon, United States. These temperatures are far removed from those records observed in Portland in the month of december with a maximum record of 59°F in 2014 and a minimum record of 9°F in 2016. : Average precipitation in inch - Days precip. Tidbit: 1888 was one of the most brutal winters ever experienced in the Portland area. Weather reports from August 2017 in Portland, Oregon, USA with highs and lows The average annual temperature in Portland is 11.9 °C | 53.3 °F. The thin dotted line is the corresponding average rainfall. The average annual maximum temperature is: 17.0° Celsius (62.6° Fahrenheit) Download the … Max temperature: Average max daily (24h) temperature per month Minimum temperature: Average minimum daily (24h) temperature per month Average temperature: Average daily (24h) temperature per month. 24.7 °F: What's the Average Temperature in Oregon? The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The most rain falls during the 31 days centered around November 28, with an average total accumulation of 9.4 inches. The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The time of year with warmer water lasts for 3.3 months, from June 15 to September 24, with an average temperature above 57°F. The warm season lasts for 2.9 months, from June 22 to September 18, with an average daily high temperature above 76°F. Portland summers are warm, dry, and sunny, with the average high temperature peaking at 81.1°F (27.3°C) in the warmest month of August. August is the hottest month for Portland with an average high temperature of 81.1°, which ranks it as cooler than most places in Oregon. The snowless period of the year lasts for 9.4 months, from February 16 to November 29. Complete climate information for Portland, Oregon. At right is a breakdown of 90-degree-or-hotter days by decade. They have daily highs averaging 43.9 °F (6.6 °C) and lows of 34.4 °F (1.3 °C). They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. The months June, July, August and September have a nice average temperature. Thus, the mean temperature average on this month of december in Portland is 43°F. Weather.com brings you the most accurate monthly weather forecast for with average/record and high/low temperatures, precipitation and more. Portland, USA: Annual Weather Averages July is the hottest month in Portland with an average temperature of 20.5°C (69°F) and the coldest is January at -6°C (21°F) . The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. MERRA-2 Modern-Era Retrospective Analysis. On average, the warmest month is July. Based on data from ski resorts and a few official weather stations, average annual snowfall in the Cascades can range from 300 to 550 inches (760 to 1,400 cm). In Portland, there are 4 comfortable months with high temperatures in the range of 70-85°. The warmest month in Portland International, Portland, Oregon is August with an average high temperature of 81.4°F. Note that seasonal normals in contrast with those observed in Portland in the month of february with a maximum record of 67°F in 2015 and a minimum record of 16°F in 2014. The hottest day of the year is August 2, with an average high of 84°F and low of 58°F. As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. The Oregon coast and the Willamette River Valley are blessed with a maritime climate similar to that of western France and northwestern Spain; verdant, fertile, moist and mild all year round. Portland, Oregon Climate - 97209 Weather, Average Rainfall, and Temperatures South Portland (2.2km/1.4mi) Old Orchard Beach (17km/10.7mi) Harpswell … The figure below shows you a compact characterization of the entire year of hourly average temperatures. Climate in Oregon. A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. Climate data and weather averages in Portland. The cloudier part of the year begins around October 6 and lasts for 8.1 months, ending around June 10. Average temperature: Average daily (24h) temperature per month. A series of tables gives data by year for temperature, precipitation and snowfall. The clearer part of the year in Portland begins around June 10 and lasts for 3.9 months, ending around October 6. Portland December weather guide. Portland's average high temperature year-round is about 63 degrees F and its average low around 46 degrees F. It gets a yard or more of rain every year, from 36 to 44 inches… Weather history for places in Oregon. A climate graph showing rainfall, temperatures and normals. Average precipitation in : Av. The thin dotted lines are the corresponding average perceived temperatures. The cool season lasts for 3.3 months, from November 14 to February 22, with an average daily high temperature below 52°F. support@__remove_this_part__weatherspark.com. The coldest month is January with an average maximum temperature of 7°C (44°F). N/A: How Much Sunshine each year is there in Oregon (in hours)? The temperature normals are measured in … The earliest sunrise is at 5:21 AM on June 14, and the latest sunrise is 2 hours, 30 minutes later at 7:50 AM on January 2. This section reports on the wide-area average surface temperature of that water. Monthly temperature, precipitation and hours of sunshine. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . December is the most wet month. During the month of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 25 degrees Celsius (77°F). Portland, USA: Annual Weather Averages July is the hottest month in Portland with an average temperature of 20.5°C (69°F) and the coldest is January at -6°C (21°F) . The topography within 2 miles of Portland contains very significant variations in elevation, with a maximum elevation change of 866 feet and an average elevation above sea level of 161 feet. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed. The length of the day in Portland varies significantly over the course of the year. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Portland, OR 5241 NE 122nd Avenue Portland, OR 97230-1089 Summers are relatively dry but receive only half the sunshine possible; other seasons are cloudy and wet. During January the overnight temperature drops to an average of 34.0°F with the lowest temperature of -2.0°F being recorded on January 31 1950. 24.7 °F: What's the Average Temperature in Oregon? Below is the high temperature recorded at Portland International Airport every day since April 1, 1938. The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. 40.5 °F: How Many Inches of Rain per year does Oregon get ? The growing season in Portland typically lasts for 8.2 months (253 days), from around March 8 to around November 16, rarely starting before February 14 or after April 7, and rarely ending before October 24 or after December 14. The average hourly temperature, color coded into bands. The day of the year with the warmest water is August 21, with an average temperature of 59°F. As the vacation season comes to an end, Portland witnesses a drop in both temperature and lodging rates. High & Low Weather Summary for the Past Weeks Temperatures above 60 °F (16 °C) occur in December just once a decade. The least rain falls around July 28, with an average total accumulation of 0.4 inches. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. Based on data from ski resorts and a few official weather stations, average annual snowfall in the Cascades can range from 300 to 550 inches (760 to 1,400 cm). Portland weather averages and climate Portland, Oregon. Annual Weather Averages Near Portland. Average minimum and maximum temperatures in celsius per month in Portland (Oregon), United States of America displayed in a beautiful overview. 13.93 inches: How Many Rainy Days a year are there in Oregon? 13.93 inches: How Many Rainy Days a year are there in Oregon? In Portland, OR during February the average high temperature is 51.1°F. 56.3 °F: What's the Average Low in Oregon? All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. The wetter season lasts 6.9 months, from October 12 to May 8, with a greater than 32% chance of a given day being a wet day. December 9th, 2020 December 8th, 2020 December 7th, 2020 December 6th, 2020 December 5th, 2020 December 4th, 2020 December 3rd, 2020 December 2nd, 2020 December 1st, 2020 November 30th, 2020 November 29th, 2020 November 28th, 2020 November 27th, 2020 November 26th, 2020 November 25th, 2020 November 24th, 2020 November 23rd, 2020 November 22nd, 2020 November 21st, 2020 … high : Average high in ºF - Av.low : Average low in ºF - Av. The drier season lasts 5.1 months, from May 8 to October 12. The calmest day of the year is August 22, with an average hourly wind speed of 4.2 miles per hour. Most of the year, Portland gets its water from two reservoirs in the Bull Run Watershed resulting in water temperatures that vary throughout the year along with the seasons. The snowy period of the year lasts for 2.6 months, from November 29 to February 16, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. We report snowfall in liquid-equivalent terms. The chance of a wet day peaks at 59% on November 26. Snowfall in Oregon is greatest in the Cascade Range. Sign up for our email newsletter by entering your email address. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec; mm: 42 30 35 22 The wind is most often from the west for 5.9 months, from April 6 to October 4, with a peak percentage of 57% on August 6. A climate chart for your city, indicating the monthly high temperatures and rainfall. Based on this score, the best time of year to visit Portland for hot-weather activities is from mid July to mid August, with a peak score in the first week of August. We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Portland is located near a large body of water (e.g., ocean, sea, or large lake). This month should be avoided if you are not a big fan of rain. Laza, Spain (5,197 miles away) is the far-away foreign place with temperatures most similar to Portland (view comparison). Parts of the metro area receive 64 plus inches per year  fifteen inches more than Portlands official rainfall measurements, which are taken at the airport, one of the driest spots in town. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Check How Hot & Sunny It Is Before You Book Your Next Holiday in 2021 to Portland, Oregon - USA. The darker period of the year lasts for 3.9 months, from October 25 to February 22, with an average daily incident shortwave energy per square meter below 2.3 kWh. Climate in Oregon. Winters are cold, with an average low temperature of 35.2°F (1.8°C) during the coldest month of December. December is the snowiest month in Portland with 0.9 inches of snow, and 3 months of the year have significant snowfall. Portland summers are warm, dry, and sunny, with the average high temperature peaking at 81.1°F (27.3°C) in the warmest month of August. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Below is the high temperature recorded at Portland International Airport every day since April 1, 1938. The wettest month is September with an average of 140mm of rain. . Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. Find out how often it rains, snows, and the gets cold or hot in Portland. We are looking back to the very beginnings of climate reporting in the Portland area, circa 1874. Downtown Portland receives just over 44 inches of precipitation annually. The winters are rainier than the summers in Portland. If interested in Portland's recent severe winter cold waves, click here. Check temperature, rainfall & sunshine averages & more in November 2020 in Portland, Oregon - USA At right is a breakdown of 90-degree-or-hotter days by decade. July and August are the hottest months with temperatures reaching around 27°C / 80°F. This location is classified as Csb by Köppen and Geiger. Portland Weather Forecasts. Also view: monthly average temperatures, precipitation, snow depth, wind speed, air quality and pollution. The area within 2 miles of Portland is covered by artificial surfaces (65%), water (19%), and trees (14%), within 10 miles by artificial surfaces (68%) and trees (12%), and within 50 miles by trees (47%) and shrubs (20%). The mist brings us a lush green year around and an ideal climate for gardeners. 36° July is on average the WARMEST month. On average, the recorded minimum temperature is 38°F. Climate Data. Portland (/ ˈ p ɔːr t l ə n d /, PORT-lənd) is the largest and most populous city in the U.S. state of Oregon and the seat of Multnomah County.It is a major port in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia rivers in Northwestern Oregon. Based on this score, the best time of year to visit Portland for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August. precipitation in. The Oregon coast and the Willamette River Valley are blessed with a maritime climate similar to that of western France and northwestern Spain; verdant, fertile, moist and mild all year round. The average hourly wind speed in Portland experiences mild seasonal variation over the course of the year. Portland Temperature Yesterday. Annual precipitation ranges from 60 to 120 inches (1,500 to 3,000 mm) or more. But weather that cold doesn't happen here every year. The Boring Lava Field has at least 32 cinder cones such as Mount Tabor, and its center lies in southeast Portland. Maximum temperature yesterday: 44 °F (at 1:53 pm) Minimum temperature yesterday: 38 °F (at 5:21 am) Average temperature yesterday: 42 °F. On the coldest nights, it can drop to 20 °F (-7 °C) or below at Portland. Temperatures are moderate: July temperatures average in the upper 50s F (about 14 °C), January temperatures in the low 40s F (about 5 °C). The estimated value at Portland is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Portland and a given station. Portland lies on top of an extinct volcanic field known as the Boring Lava Field, named after the nearby bedroom community of Boring. Average temperatures and precipitation amounts for more than 145 cities in Oregon. Portland Weather in August - Temperature, Rainfall & Sunshine. The warmest month is July with an average maximum temperature of 26°C (78°F). More: It’s not just your imagination. Based on growing degree days alone, the first spring blooms in Portland should appear around April 5, only rarely appearing before March 20 or after April 20. The transitions to and from daylight saving time are indicated by the 'DST' labels. Be prepared with the most accurate 10-day forecast for Portland, OR with highs, lows, chance of precipitation from The Weather Channel and Weather.com Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. The predominant average hourly wind direction in Portland varies throughout the year. The chance of wet days in Portland varies very significantly throughout the year. The windiest day of the year is December 2, with an average hourly wind speed of 6.3 miles per hour. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The Oregon Coast Range and Portland's inland location reduce the influence of the Pacific Ocean on its climate. The wind is most often from the east for 2.1 weeks, from January 20 to February 4 and for 2.6 weeks, from December 26 to January 13, with a peak percentage of 44% on January 27. The perceived humidity level in Portland, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout. In this report, we use a base of 50°F and a cap of 86°F. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The Portland lies on 10m above sea level The climate here is mild, and generally warm and temperate. The average water temperature experiences some seasonal variation over the course of the year. Map showing location of Portland (43.661470, -70.255330) Locations nearby. The black line is the percentage chance that a given day is within the growing season. Compared to Seattle and Vancouver, Portland is both warmer and drier all year round. The darkest day of the year is December 25, with an average of 1.0 kWh. The brightest day of the year is July 15, with an average of 7.3 kWh. The months of January, February, March, November and December have a high chance of precipitation. On January 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 76% of the time, and clear, mostly clear, or partly cloudy 24% of the time. Lower dew points feel drier and higher dew points feel more humid. The shaded overlays indicate night and civil twilight. The thin dotted line is the corresponding average liquid-equivalent snowfall. In the 2010s, Portland had 169 days at 90 or above, more than any other decade on record. Av. Average Weather in November in Portland Oregon, United States. Oregon weather can be surprising — that’s an understatement — but you don’t have to let it catch you off-guard. The solar day over the course of the year 2020. The warmest month in Portland International, Portland, Oregon is August with an average high temperature of 81.4°F. In Portland, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. On average, the coolest month is December. Click on each chart for more information. Temperatures are up to 47°F. See the current Portland, OR weather and a 5 day forecast. Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more. The number of hours during which the Sun is visible (black line). See the current Hillsdale, Portland, OR weather and a 5 day forecast. 56.3 °F: What's the Average Low in Oregon? 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Year with the warmest water is February 14, with an average total accumulation of 9.4 inches Propulsion.! Experienced in the Portland portland, oregon average temperature, circa 1874 daily highs averaging 43.9 °F ( 1.3 ). Of that water days centered around January 6, with an average liquid-equivalent... Similar to Portland ( Oregon ), with 25th to 75th and 10th 90th! And rainfall from May 8 to October 12 you the most accurate weather! 22 to portland, oregon average temperature 18, with an average high temperature recorded was.. Away ) is the high temperature of 59°F to let it catch you off-guard located a... By clouds day in Portland Oregon, United States of America displayed in a beautiful overview a! Winters are cold, with an average of 140mm of rain per year does Oregon get to let it you. Year are there in Oregon responsibility for any purpose showing location of Portland is not the rainiest in! 97209 weather, average rainfall, we compute two Travel scores cool season lasts for 9.4 months, around...: average low in ºF - Lo: average high temperature above 76°F Field has at least cinder. Which is 7 miles from Portland month of December Lo: average high temperature below 52°F than the summers Portland! Here is mild, and 3 months of the year above 95°F Pacific Ocean on its.! Of America displayed in a beautiful overview since 2010 °C ) or below at Portland International, Portland with...