2020 Long Range Weather Forecast for Gresham, OR

Get the Long Range Weather for Your Location

See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.

To see long term forecasts for the entire year, pick up a copy of The 2020 Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

July 2020 Long Range Weather Forecast for Pacific Northwest
DatesWeather Conditions
Jul 1-3Sunny, warm
Jul 4-11Scattered showers, cool
Jul 12-20Sunny, turning hot
Jul 21-28Scattered showers, warm
Jul 29-31Showers, cool
Julytemperature 66° (1° above avg.)
precipitation 0.3" (0.2" below avg.)

August 2020 Long Range Weather Forecast for Pacific Northwest
DatesWeather Conditions
Aug 1-8Sunny, warm
Aug 9-23Showers and t-storms, cool
Aug 24-31Sunny, turning hot
Augusttemperature 64° (2° below avg.)
precipitation 2.5" (1.5" above avg.)

Annual Weather Summary
November 2019 to October 2020

Winter will be warmer and rainier than normal, with below-normal snowfall. The coldest periods will occur in mid- to late December, early and mid- to late January, mid-February, and mid- to late March. The snowiest periods will occur in mid-December and early and mid- to late January. April and May will have near-normal temperatures, with below-normal rainfall. Summer will have slightly above-normal temperatures, on average, with above-normal precipitation. The hottest periods will be in late June, mid-July, and late August. September and October will be warmer and rainier than normal. The hottest periods will be in early and mid-September.

Map showing Old Farmer's Almanac long range weather region number 15

About the Pacific Northwest Region

The Pacific Northwest long range weather region includes all or part of the following states: CALIFORNIA (Arcata, Eureka, Fortuna, McKinleyville), OREGON (Beaverton, Eugene, Gresham, Portland, Salem), WASHINGTON (Bellevue, Everett, Seattle, Tacoma, Vancouver).

Pacific Northwest Neighboring Regions

Here are the regions that neighbor the Pacific Northwest long range weather region:

Temperature and Precipitation November 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for Gresham, OR

Reader Comments

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Long-range weather predictions

The Editors's picture

Every year, The Old Farmer’s Almanac publishes the annual edition. It includes our long-range predictions for the upcoming 12 months. The next edition (2019) will be available by early September. Read how we predict the weather here: https://www.almanac.com/content/how-we-predict-weather

Long term forecast pnw

Wrong. First of all, rain/showers is virtually nonexistent during the summer months in the Pacific northwest. Totally off the mark.

Graduation from police academy

This occurs on Nov 1. I'm travelling from Germany. What's the weather in the Puget Sound on 1st of November?

Long-range weather predictions

The Editors's picture

Hello, all, For further clarification of this page: We provide this free two-month forecast on our Web site, courtesy of The Old Farmer’s Almanac. For a full year of forecasts, please consult this year’s edition of The Old Farmer’s Almanac which is available in print or digital editions. Do keep in mind that long-range predictions are made over a year in advance and based on weekly trends (not daily) and regional trends (vs city/state). You can find the Almanac in libraries, stores where books and magazines are sold, Amazon.com, and here on https://store.almanac.com. We appreciate your interest in The Old Farmer’s Almanac and our free Web site.

Need weather for wedding September 15

Need weather conditions for September 15

June 2019

Hoping to have an outdoor wedding in Portland, Oregon in the last half of June 2019.

Any predictors as to how dry of a summer Oregon will have in 2019?

Weather portland summer

Portland is very stable weather wise in summer. End of June through mid August - it is VERY VERY unlikely to even have 1 day of rain, in our current climate.

May wedding

I am getting married outdoors on may 18th in Arlington WA, what are the chances of showers that day? I'm a bit nervous

Rain may 18 In Washington

I’d say it’s a 65-70 chance of rain every day in mid may

Garden Wedding

Hi. I'm having a garden wedding on June 3rd in Puyallup. I'm really hoping it does not rain. What is the likelihood that it will rain on my wedding day?

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