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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Much cooler and wetter than normal. Summer left one day and we went right into fall in Seattle area.
It's like the sun left and has no intention of coming back. Dark clouds and wet days. Not fun.




Amen to that. Without the snow pack in the hills, there will be a drought and a lot of wildfires.


Where you come from Seattle rains to much your crazy to think that.....

"Cooler and wetter than normal"?

Normal in Seattle is for it to start raining promptly the day after Labor Day (why do you think they call the festival Bumbershoot?). It would rain every day of September, which was disconcerting when I first moved here over 22 years ago, used to warmer and dryer autumns. A normal Seattle autumn would have beautiful autumn color for a week before a rain and wind storm knocked all the leaves to the ground. Some summers, we would have what we called Juneuary, with no real summer happening. The last five years have been much hotter and dryer than normal, more California-like, so I guess you've never experienced normal Seattle weather. This year has been the hottest and dryest on record.

Seattle/Olympia Snow and Ice driving

Get slip-on ice cleats for your shoes -- yes, they work great and are modestly prices -- and tires with studs/chains It is just as icy here in eastern Washington. My biggest fear is western Washington residents who have relocated and are experiencing their initial winters here. Two times, I have lost vehicles due to their poor ability to equip their rigs for the weather, not to mention their failure to learn the skills needed for winter driving. Please learn and then teach your neighbors and children.

Cooler than normal...

I am in the Portland/Vancouver area and we have been having lower than normal temps along with higher than normal rain. 09/15 we had .76 inches of rain in just one day! Our weather is becoming unpredictable. No matter how much technology we have.

Winter coming soon

My hens have starting their molting process this past week!! Would sure like to have an estimated date of 1st snowfall for Couer dAlene area this year.. anyone know?

Washington - Oregon October Trip

This is good info. I live in Hawaii, my girlfriend and I will be traveling in starting October 9 from Seattle to Olympic National Park, down the coast, Oregon Coast, Mt. Hood area, then to Portland. Trying to figure out what the weather might be like. From what I gather here and in the comments, it'll be wet and might be a little chilly. That's OK with us, as long as we can still hike and explore. Hopefully we get some nice fall-type of foliage and beauty.

Reply to Ben in Hawaii

You are coming to the PNW atvthe best time for Fall foliage! Make sure you allow plenty of time for the Columbia Gorge on your way up to Mt. Hood. Stop by Crown Pointe for spectacular photo ops, Multnomah Falls, Bonneville Dam & the fish hatchery where Herman the Sturgeon (over 5 feet long) lives, the wine & fruit orchards on the "Fruit Loop" then on your return, cross over the "Bridge of the Gods" at Cascade Locks and come west on highway 14 in Washington so you can see across the river, different viewpoint. You can get back across on I-205 or I-5 back to Portland. Honestly, don't waste your time IN Portland. The real PNW is all around it!