Mean Temp: 55 °F.

1026.1hPa Wind. The mean monthly relative humidity over the year in Portland (Oregon), United States of America.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold. Relative humidity of Washington including average monthly and annual data. Monthly averages Portland Longitude: -122.676, Latitude: 45.5235 Average weather Portland, OR - 97209. 78% Pressure. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 11% chance of a rainy day. The tables give the daily averages along with highest and lowest relative humidity levels. Local Weather; 3 month history; Climate history; Forecast; Current Conditions; Synoptic Chart; Satellite; Radar; Portland Local Weather 38.35°S, 141.59°E RSS Save as my local Now in Portland Updated at 18:20 EST PAST 24 HOURS. Climate data and weather averages in Portland.

The most pleasant months of the year for Portland are August, July and June. Average humidity in Seattle (Washington State) The mean monthly relative humidity over the year in Seattle (Washington State), United States of America. Maximums and minimums are only part of the temperature picture.

All Year January February March April May June July August September October November December. July is the driest month… The warmest month is July with an average maximum temperature of 26°C (78°F). In this table, the Daily number is the average of humidity readings taken every three hours throughout the day. The average annual temperature is 7.8 °C | 46.1 °F in Portland.

Station Data. Daily Oregon HAM Radio Operators Weather Report; Daily Temps/Precip/Snowfall: Portland ( 1940-2019, csv file) Daily … The average annual percentage of humidity is: 73.0%

In Portland, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.. This page provides local weather extremes and records, holiday weather, COOP data, and area climate summaries. Monthly: 1981-2010 normals History: 2007-2019 This product is available for up to 2 months. Average Humidity. On average, December is the most humid. This month should be avoided if you are not a big fan of rain. The month of July in Portland experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 32% to 19%. July is the hottest month for Portland with an average high temperature of 78.8°, which ranks it as about average compared to other places in Maine. The clearest day of the month is July 28, with clear, mostly clear, or partly cloudy conditions 81% of the time. On average, August is the least humid month. 10.2 °C Feels like 4.7 °C Dew Point. The average annual percentage of humidity is: 76.0%; More Climate Information For Seattle. December is the most wet month. This location is classified as Dfb by Köppen and Geiger.