Snow Day Chance Calculator ❄️

Snow Day Chance helps parents and students estimate the likelihood of a school snow day using local weather forecasts. Enter your ZIP code for the most reliable results, or use a city and state to see how snowfall, temperature, wind, and timing affect the chance of school closures.

Location & forecast

We focus on the morning commute window (5–9am) because that’s when cancellations usually happen.

Most reliable: enter your 5-digit ZIP.
If you use City, ST (example: Grand Rapids, MI), wait for the Suggested locations list to appear and select your exact match from the list.

Snow Day Chance

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Type a ZIP or address ❄️
Score: —
Max score: 100
Parent controls These affect the score any time.
Average
Better plowing = lower snow day chance.
Normal
Adjusts how quickly the district cancels.
Turn this on to play with the weather dials after the forecast loads.
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Auto-filled from the forecast (local time).
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Heaviest snow during 5–9am boosts the score a lot.
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Estimated from near-freezing temps + precip chance.
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Higher wind makes blowing/drifting and visibility worse.
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Cold + wind = wind chill risk for people waiting outside.

How to use this snow day forecast

This site estimates the likelihood of a snow day based on the local forecast. Enter a ZIP code (or select a location), review the inputs, then compare the output with your district’s official notices.

  • Check the forecast the night before and again in the morning.
  • Look at timing (overnight vs. commute hours), not just total snowfall.
  • Use this as guidance—not a guarantee.

What the calculator considers

The estimate is driven by forecast snowfall totals and common disruption factors like cold temperatures, wind, and the timing of snow.

Key assumptions

  • More snow during commute windows increases closure likelihood.
  • Colder temperatures increase the chance snow remains on roads.
  • Strong winds can reduce visibility and create drifting.

FAQ

Is this official?

No. This is an unofficial tool. Always follow your district’s official announcements.

Why can the chance change?

Forecasts update frequently. A small change in timing or temperature can meaningfully change disruption risk.

Do you store my searches?

No accounts are required. Location input is used only to fetch geocoding and forecast data.

Site transparency

  • About: what this tool is, what it isn’t, and methodology.
  • Contact: feedback form (static-site friendly).
  • Updates: a lightweight changelog list.
About Contact