October 31, 2025

Spooky, Soggy Halloween Night

Last updated 2:00pm Friday, October 31st, 2025 

By: Sam Pham, Eric Theumer, and Trevor Tom

Happy Halloween, Huskies! Hopefully, you are enjoying the calm weather because as we head into this spooky night, a scary atmospheric river will move into the region, bringing steady rain and howling winds for the trick-or-treaters out there. Wind gusts tonight will not be so scary as they will be 15-20 mph gusts along with the rain, so if you are heading out for a Halloween party or dressing up in a costume, make sure that it’s waterproof and if able, bring a good rain jacket to protect your costume from getting drenched.

Don’t blow away! Ahead of the frontal system, wind gusts will drastically pick up this evening and stick around through most of the day tomorrow. The San Juan’s and the North Coast will likely see the strongest gusts, those exceeding 45 MPH. We can expect possible power outages to occur. As for the Puget Sound area, gusts will likely be between 25 and 35 MPH but there is a strong possibility that they are much higher as shown in the graphic above. 

If you are planning to be anywhere along the Grays Harbor County coast this weekend, there has been a high surf advisory issued. Waves will peak between 16 to 20 feet, with periods of 15-17 seconds. Be safe out there!

Rain will continue through Saturday amounting to a total of 1-2 inches across the Sound, with higher totals along the coast and Northwest Interior. Precipitation will also be heavy at times in the mountains, mainly in the form of rain as snow levels are still hovering around 9000 feet. Snow levels drop to 4000 feet as we approach Sunday, but most of the precipitation will have wrapped up by this time. The National Weather Service has issued a flood watch for portions of Western Washington including Seattle, which calls for both the risk of minor urban flooding as well as river flooding from runoff. If you live near flood prone areas or notice clogged drains in your neighborhood, make sure to stay alert this weekend.

Sunday looks to be the brighter day overall, with sunbreaks and only a few early morning showers as the atmospheric river heads on out. If you have any weekend plans, consider moving them to Sunday!

Also, a friendly reminder that this weekend is Daylight Saving Time, where we will move our clocks back one hour on Sunday morning, which will cause the well-known “Big Dark” to settle in as sunset times starting next week will be around 4:45 pm and dropping fast, especially as we hit the end of November where it will set at 4:21 pm!

Have fun and stay safe out there, Huskies!

Reach forecasters Sam Pham, Eric Theumer, and Trevor Tom at uwdawgcast@uw.edu, on X/Twitter @TheUWDawgcast, on BlueSky @TheUWDawgcast, or Instagram @uwdawgcast.