2018 Long Range Weather Forecast for Seaside, OR

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See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our 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 annual Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific. If your city is located inside a region, the region's forecast will apply to you.

Free 2-Month Weather Forecast

January 2018 Long Range Weather Forecast for Pacific Northwest
DatesWeather Conditions
Jan 1-3Rain and snow showers
Jan 4-9Rain, some heavy, turning mild
Jan 10-17Rainy periods, cool
Jan 18-21Sunny, cool
Jan 22-31Rainy periods, cool
Januarytemperature 43° (avg.)
precipitation 5" (1" below avg.)

February 2018 Long Range Weather Forecast for Pacific Northwest
DatesWeather Conditions
Feb 1-5Rainy periods, cool
Feb 6-10Showers, mild
Feb 11-16Sunny, mild
Feb 17-25Rainy periods, mild
Feb 26-28Misty, mild
Februarytemperature 47° (3° above avg.)
precipitation 3" (2" below avg.)

Annual Weather Summary: November 2017 to October 2018

Winter will be drier and slightly colder than normal, with near- to below-normal snowfall. The coldest periods will occur from late November into early December and in late December, with the snowiest periods in early to mid- and late December. April and May will be warmer and drier than normal. Summer will be warmer and rainier than normal, with the hottest temperatures in mid-June and early and mid- to late July. September and October will be slightly cooler than normal, with rainfall near normal in the north and above normal in the south.

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, Yreka), 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 2017 to October 2018

Temperature and Precipitation Graph

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