About

A free snow day calculator for families, students and teachers in the United States.

Most snow day predictors show one big number and never say where it came from. We wanted one that reads the official National Weather Service forecast for your exact spot, gives a separate chance for a 2-hour delay, and shows every number behind the result. The scoring method is written out in full on How it works.

Who runs the Snow Day Calculator

I'm Muhammad Shakeel, a web developer. I wrote the scoring method, keep the National Weather Service connection working, and research and write the guides myself. Every guide links to the district pages, state rules and news reports it is based on.

If an estimate looked wrong for your school, tell me what happened and where. I check it against the forecast and the method, and fix the page or the method when the report shows a real problem.

What we stick to

• We say what the number is based on, every time.
• We never show 100%. Only your school district can decide.
• We do not claim an accuracy rate we have not measured.
• No account is needed. Searches are remembered in your browser, and forecast lookups are cached temporarily. See our privacy policy.

Data sources

• Forecasts and alerts: National Weather Service (NOAA). We are not affiliated with the NWS.
• ZIP codes and places: US Census Bureau Gazetteer files, plus town locations for large rural ZIP codes from GeoNames (CC BY 4.0).

Corrections

When we get a fact wrong in a guide, we fix it and note it here with the date. Changes to how the estimate is made are listed on how it works.

• 31 October 2026: the snow amount guide gave about 2.6 inches for the January 2014 Atlanta storm. The National Weather Service summary says 1 to 3 inches across metro Atlanta, so the guide now says that, with the NWS as its source.

Questions or ideas? Contact us.