The most pleasant months of the year for Portland are September, July and August. In Portland, there are 4 comfortable months with high temperatures in the range of 70-85°. 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. December is the snowiest month in Portland with 0.9 inches of snow, and 3 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.
Today's Weather - Portland, OR
4 PM PST
Chance Rain Showers
|7 DAY FORECAST||DESCRIPTION||HIGH/LOW||WIND|
|This Afternoon||Chance Rain Showers||73° / 56°||W 9 mph|
|Wednesday||Showers And Thunderstorms Likely||69° / 55°||WSW 0 to 9 mph|
|Thursday||Rain Showers Likely||67° / 56°||SSW 8 mph|
|Friday||Chance Rain Showers||68° / 55°||SW 6 to 9 mph|
|Saturday||Slight Chance Rain Showers then Partly Sunny||69° / 57°||WSW 6 mph|
|Sunday||Mostly Sunny||75° / 56°||WNW 1 to 7 mph|
|Monday||Mostly Sunny||80° / 59°||WNW 5 to 9 mph|
Summer High: the July high is around 81 degrees
Winter Low: the January low is 36
Rain: averages 43 inches of rain a year
Snow: averages 3 inches of snow a year
SPERLING'S COMFORT INDEX
Portland ranks 79/100 for Comfort Index
A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.
Average Monthly High and Low (°F)
Hot, Freezing, Rainy, Snowy Days: Portland
YOU SHOULD KNOW
Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.
Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.
Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.