Snow Day Calculator for Seattle, WA
Will Seattle schools be closed tomorrow?
Tomorrow by school district
| District | Closure | Link |
|---|---|---|
| Seattle School District No. 1 | — | — |
| Highline School District | — | — |
Districts serving Seattle ZIP codes (NCES). Chances from the National Weather Service forecast.
Not listed? Enter your ZIP
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Snow by hour
From the National Weather Service forecast, updated hourly. Estimate only. Your district makes the call.
Snow in Seattle: what is normal
- Snow a year
- 4 in.
- Days with 3+ in.
- 0.4
- Days with 1+ in.
- 1.5
NOAA NCEI U.S. Climate Normals 1991–2020, Seattle Sand Pt WSFO, WA station. Averages per year.
Snow is unusual in Seattle, so even a light event can shut down roads and schools. The calculator weighs Seattle snow against that: an inch here counts for far more than an inch in Buffalo or Minneapolis. How the calculator works.
What closes schools in Seattle (our model)
| Overnight snow | about 3 inches |
|---|---|
| Ice (freezing rain) | about 0.14 in. |
| Wind chill at bus time | −20°F |
| Normal winter low | 37°F |
Levels where a closure becomes likely in our model, from NOAA normals. Not a district policy.
ZIP codes covered
98121, 98109, 98101, 98154, 98174, 98164, 98119, 98104, 98102, 98122, 98134, 98195, 98112, 98199, 98107, 98144, 98116, 98103, 98105, 98126, 98117
ZIP codes inside or near Seattle. Each has its own forecast; enter yours above for your district.
Seattle snow day questions
Will Seattle, WA schools be closed tomorrow?
The calculator above shows tomorrow's chance of a closure and of a delay for each Seattle-area school district, from tonight's National Weather Service forecast. It updates every hour from the afternoon until morning. It is an estimate: your district makes and announces the decision, often early in the morning or the evening before a big storm.
How much snow does Seattle, WA get?
Seattle averages 4 inches of snow a year, with about 0.4 days a year of 3 inches or more and 1.5 days of an inch or more (NOAA 1991–2020 climate normals, Seattle Sand Pt WSFO, WA station).
How much snow does it take to close schools in Seattle, WA?
Very little. Snow is rare in Seattle, so districts often close or delay for an inch or two, and for any ice on the roads. Our model treats about 3 inches of overnight snow as the level where closures become likely here.
Guides
- How much snow cancels school?
From one inch in Atlanta to a foot in Buffalo: what it takes in every state, with NOAA data.
- What time are snow days announced?
When districts decide, how they tell families, and when to check the calculator.
- Ice storms and school closings
Why a tenth of an inch of ice can close more schools than a foot of snow.
- Signs of a snow day tomorrow
The forecast signs that really matter, and the folklore that doesn't.
Nearby
Seattle: did school close today?
Your report improves tomorrow's estimate.