2020-2021 Long Range Weather Forecast for Pacific Northwest

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 2021 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

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.)

September 2020 Long Range Weather Forecast for Pacific Northwest
DatesWeather Conditions
Sep 1-7Sunny, hot
Sep 8-15Showers, then sunny, hot
Sep 16-24Sunny; cool, then warm
Sep 25-30Rainy periods, warm
Septembertemperature 64° (3° above avg.)
precipitation 1" (0.5" below avg.)

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:

Reader Comments

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Just want snow

Wonder what the probability of snow is this year? I am in the Seattle area and the snow we got last year was amazing!

Snows Coming

I believe we are going to be much cooler and wetter this winter and snow will be much higher than average for most areas from the California/Oregon border into British Columbia. We could end up seeing some very significant weather that is far from normal for the PNW.

Snow late 2019

The 3-4 inches of solid ice on our sidewalks in Seattle didn't melt for over a week last year. It's pretty but turns immediately into ice. Snow here is not like the east coast, midwest, California or Utah. Even wearing snowboots and using ski poles you can slip on our icy sidewalks, and forget about driving on the hills, which are everywhere. When I lived on a steep hill in Fremont, the only way to walk down to the market was with snowshoes. Anything else and you just kept sliding back downhill. YouTube shows spectacular car and bus crashes on Capitol Hill, and Queen Anne is the worst. Even its trolleys won't run.

I doubt it will snow: this has been the hottest year on record, though it's cooled off a bit in the last two weeks. The big snow usually happens here in February; sometimes there's a little in Nov. or Dec. We haven't had normal weather for a good five years.


You definitely don't know what your taking about. I came from the east coast. Yes queen ann and Capital hill are bad for a week with 4 inches of ice on them. But consider this, the east coast has had eight to ten inches of ice on there sidewalks in the past. And it lasts for six months.


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.