Snow Day Calculator

Enter tomorrow’s forecast and get the odds your school closes, scored against the National Weather Service threshold that actually applies where you live, because a Winter Storm Warning takes 3 inches in Raleigh and 6 in northern Indiana. Every number behind the result is shown, so you can check the working rather than trust it.

Tomorrow’s forecast

Take these off your weather app or your local National Weather Service page.

Where you are —

Snow forecast in

06121824+

When it falls The call is usually made around 5 a.m.

Your school —

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The whole model, in the open

No other snow day calculator publishes its arithmetic. Here is every number behind the one above.

Hazard	Your forecast	On its own

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Then adjusted for	Your answer	Multiplier

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Ice, wind, cold and your district’s own rules

Ice or freezing rain in A quarter inch is an Ice Storm Warning. Peak wind mph 35 mph plus blowing snow is a blizzard. Lowest wind chill °F At dawn, not the daytime high. District closes at — Snow days already used days Districts get stingier once the budget is gone.

Blowing snow Visibility under a quarter mile The other half of a blizzard warning.

Snow Day Calculator

Tomorrow’s forecast

The whole model, in the open

What the Weather Service would issue

The same snow, four published thresholds