2020 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

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.)

October 2020 Long Range Weather Forecast for Pacific Northwest
DatesWeather Conditions
Oct 1-6Rainy periods, cool
Oct 7-13Rainy periods, mild
Oct 14-23Rain, some heavy; cool
Oct 24-31Rainy periods; cool, then mild
Octobertemperature 55° (1° above avg.)
precipitation 5" (2" 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 Pacific Northwest Region

Reader Comments

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Very Interesting

I found your article to be very interesting, and I would like to follow what you see, as you go. Do you have a website?

Sunset Positions

The weather patterns are changing rapidly and everyone around the world recognizes this change. I've kept track where the sun has set on 21 June, 21 September, 21 December and 21 March. These 4 positions of the sunset I've noted on a low mountain ridge approximately 5 miles west of my house in northwest Montana over the past four years.

Curious again

I’ve read all your posts. I’m just seeking more. I want to know all of the things.

fires, global warming

I am sorry that the news is not truthful about a lot of things. I have a long time class mate that fights fires all over the west. Last year 16 of the fires in California was caused by PG&E bad maintenance. After consulting with a foreman that works for Parr electric out of Texas repairing and replacing high power transmission lines. I found the above to be true, Yes we have had less rain than in years past, but it does not give our power companies and out of control (CONTROLED) forest service burns the right to kill and destroy our personal property and forests. We complain about the timbers being cut down and our wild life not having a place to live. Wake up people. The forest fire not only displace our animal population, but also destroys it. My fire fighting friend has told me stories of animals running across the fire roads on fire. We need responsible people to step up and do something about it instead of being lied to about the facts. Than blaming everyone and thing except themselves where the responsibility lies.

SoCal North

I just moved from San Diego to Eugene a few months ago, only to find the region is turning into Southern California North.

Hoq many more years of this can we take before the rivers run dry and the hydro plants fail?

Eugene, OR

The Editors's picture

Thanks for sharing your comments and concern. We’re all in this together!

Forest Fires

...and proper forestry management.

This is getting really scary, such little rain!!

The Farmer's Almanac has been close most years, but this year it's the roll of the dice....Here in Brookings we usually get a lot of rain, but this year its horrible...Great weather but its not normal for this time of year, what is going to happen next spring and summer when everything is really dry?? We already had a scary 190,000 acre fire 2 years ago that came 5 miles from town, my heart goes out to all those people in Paradise CA who lost their homes and lives....Time to pray for rain folks!!

Pray for Rain

We concurr completly!!!!! We are praying every day for rain. This is very very scary..and it seems to coincide with pple moving to the pnw en mass. HORRIBLE. We are in issaquah and see heat syress on the red cedars and Tolt River drying up. Heart breaking

Low rainfall!

I'm in agreement Ron and am getting quite fearful as to what next summer will bring. This past winter was relatively dry then we went through a long, hot summer. I have ponds on my land and they aren't filling up. Usually torrential rains during late October and November would have done the job. My wife noticed no geese or ducks. I said there's little water for them to have an easy take off once landing. We usually have flocks of them coming in. We're not too far from the Ridgefield National Wildlife Refuge. The have access to the river and estuaries associated withe Columbia River, but streams and inland ponds that need rainfall are low to dry. I had to dig a grave for one of my pets. The ground was like concrete below several inches and this was in an area of rich topsoil. All we can do is hope and pray. : |