It's Been an Extra Rainy Month, Year and Decade in Seattle, WA

news image
Top Stories
5 Feb 2018 3:04 PM
Even for Seattle's lofty standards, it's been seriously rainy. Sure, it's been a wet start to 2018, with nearly nine inches of rain in the Emerald City since January 1st. But that's just the start of it. Since the start of the wet season (October 1st), Seattle has seen 27.78", well above the average of 21.50" for that time period. In 2017, Seattle saw 47.87" of rain, making it Seattle's ninth-wettest year on record (records go back to 1894). But wait - there's more. Since 2010, every year except for one (2013) has featured well above-average rainfall. Six of the eight years since and including 2010 have seen annual rain totals of 44 inches or greater, which is 22 percent higher than Seattle's average annual rainfall of about 36" (35.99", to be exact). This is due in part to the similar 'rex block' weather pattern that's kept California considerably drier and warmer than usual over the same time spell as well, contributing to the state's epic drought that only came to an end last year. This pattern features high pressure over the Southwest, which blocks moisture from reaching California, but forcing it up and over and into the Pacific Northwest. For Seattle, this has led to a long-term and seemingly never-ending plume of moisture. The short-term forecast shows, you guessed it, more rain for Seattle and western Washington, although rain amounts shouldn't be too high this week. Stay with WeatherNation for the latest on this. For WeatherNation: Meteorologist Chris Bianchi - Featured photo: Courtesy of Earthcam.com
All Weather News
More
Significant Moisture Increases Flooding Threat for the Southwest This Week

Significant Moisture Increases Flooding Threat for the Southwest This Week

An area of low pressure in the Gulf of Califo

16 Sep 2026 1:20 AM
Tropics: LOW Chance of Development in Atlantic

Tropics: LOW Chance of Development in Atlantic

The Pacific Ocean has been incredibly active

16 Sep 2026 1:15 AM
Rounds of Storms Increase the Flood Threat in the Midwest

Rounds of Storms Increase the Flood Threat in the Midwest

It's no secret that the Midwest has been the

16 Sep 2026 1:10 AM
Summer Heat Holds it's Grip on the South

Summer Heat Holds it's Grip on the South

No surprise here: More records were broken ac

16 Sep 2026 1:00 AM
No Hurricanes Yet in the Atlantic, A New Record

No Hurricanes Yet in the Atlantic, A New Record

For the first time in the satellite era (sinc

15 Sep 2026 10:00 AM
Active Pattern Takes Shape Across the Plains

Active Pattern Takes Shape Across the Plains

Monday proved to be an active severe weather

15 Sep 2026 10:00 AM
Storms Winding Down Across Northeast

Storms Winding Down Across Northeast

WHAT TO EXPECT Record rainfall has fallen acr

14 Sep 2026 1:10 AM