The warm season lasts for 2.9 months, from June 22 to September 18, with an average daily high temperature above 76°F. Camas Accessibility To characterize how pleasant the weather is in Portland throughout the year, we compute two travel scores. not including the Cottrell School rain gage, which is outside of the general Portland area, Home | Privacy & Cookies | Contact | About. We report snowfall in liquid-equivalent terms. 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. Climate data and weather averages in Portland. We assume no responsibility for any decisions made on the basis of the content presented on this site. Station was retired. 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. U.S. Geological Survey Precipitation: 2.05" Humidity: 72%. A climate graph showing rainfall, temperatures and normals. Rain and severe thunderstorms will spread across a large swathe of northern, eastern and southeastern Australia during the second half of this week, likely continuing into next week as well. At an average temperature of 20.0 °C | 68.0 °F, July is the hottest month of the year. of Environmental Services. 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 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. 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. Based on the tourism score, the best time of year to visit Portland for warm-weather activities is from early July to late August. Annual Weather Averages in Portland. The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. The cool season lasts for 3.3 months, from November 14 to February 22, with an average daily high temperature below 52°F. URL: https://or.water.usgs.gov/precip/index.html The shaded overlays indicate night and civil twilight. 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. The transitions to and from daylight saving time are indicated by the 'DST' labels. The average hourly wind speed in Portland experiences mild seasonal variation over the course of the year. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The HYDRA rainfall network is operated and maintained by the City of Portland Bureau 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. Rainfall ranges from 15 mm (0.6 in) in the driest months (July, August) to 145 mm (5.7 in) in the wettest (November). This section reports on the wide-area average surface temperature of that water. Mount Vista Thus, the water year The figure below shows you a compact characterization of the entire year of hourly average temperatures. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. Weatherzone Business offers solutions that are innovative, tailored, flexible and responsive. In Portland, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year. 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. 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. Vancouver Av. 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. Portland experiences extreme seasonal variation in monthly rainfall. Rainfall data are provided with their 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. Portland Airport climatology including monthly and daily averages and records of temperature and rain. A series of tables gives data by year for temperature, precipitation and snowfall. Based on weather reports collected during 1985–2015. No. The variation in temperatures throughout the year is 15.7 °C | 60.3 °F. 2016. Bend, © Climate-Data.org / AM OP / OpenStreetMap contributors, Portland Weather by month // weather averages, Portland Climate graph // Weather by Month. Data through 08-Mar-2017. High School (#235). Click on each chart for more information. Portland area -- average rainfall, 42 gages, The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. Low Temp: 36 °F. 7-hour rain and snow forecast for Portland, OR with 24-hour rain accumulation, radar and satellite maps of precipitation by Weather Underground. The water year is designated by the calendar year in The cloudier part of the year begins around October 6 and lasts for 8.1 months, ending around June 10. The number of hours during which the Sun is visible (black line). of Environmental Services, National 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. : Average precipitation in inch - Days precip. [20-May-2020] A new rain gage was installed at Parkrose The least rain falls around July 28, with an average total accumulation of 0.4 inches. Gresham Global Summary of the Year, Version 1.0. 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). Washington (IAD), Boston (BOS), Newark (EWR), Tokyo (NRT), Amsterdam (AMS), San José (SJC), North Bend (OTH), Los Angeles (LAX), San Diego (SAN), Long Beach (LGB), Santa Ana (SNA), Palm Springs (PSP), Kansas City (MCI), Kahului (OGG), Aberdeen Copyright © 2020 Current Results Publishing Ltd. The average water temperature experiences some seasonal variation over the course of the year. Rainfall drives how much water is in streams. The figure below presents a compact representation of key lunar data for 2020.