Snow Day Chance Calculator
Check if school will be closed tomorrow — enter your zip code and find out.
Predictions are estimates based on weather forecasts. Always confirm with your school district's official announcements.
Check if school will be closed tomorrow — enter your zip code and find out.
Predictions are estimates based on weather forecasts. Always confirm with your school district's official announcements.
Our snow day calculator predicts the likelihood of school closures and delays based on real-time weather data for your area. Enter your zip code, choose your school type, and get an instant probability estimate powered by snowfall forecasts, ice accumulation, wind chill, and historical closure patterns for your region.
A snow day calculator is a snow day predictor that uses live weather forecast data to estimate whether school will be cancelled or delayed tomorrow. Unlike a basic weather app, a school closing calculator factors in how your specific type of school and district respond to winter weather — including snowfall thresholds, ice accumulation, wind chill, and bus route conditions — to give you an actual snow day probability rather than just a forecast.
A weather app tells you how much snow to expect. A snow day predictor tells you what that snow actually means for your school. Two inches of snow might cancel school in Nashville but barely register in Buffalo. Our calculator accounts for these regional differences, your school type, local closure history, and road conditions to estimate your real chance of a snow day — not just the chance of snow.
The calculator analyzes weather forecast data for your specific location, including expected snowfall totals, ice accumulation, wind speed, and temperature. It combines this with your school type and district-level closure history to estimate a probability that school will be cancelled or delayed the next day.
Accuracy improves as the weather event gets closer. Predictions made the evening before tend to be the most reliable because weather models are most accurate within a 12-24 hour window. We recommend checking again before bed for the most up-to-date probability.
The biggest factors are total snowfall amount and timing relative to the morning commute. Ice accumulation, wind chill advisories, road conditions, bus route accessibility, and your district's historical threshold for closures all play a role. Rural districts with longer bus routes tend to close more readily than urban ones.
Currently we support US and Canadian zip codes. The calculator uses National Weather Service data for US locations and Environment Canada forecasts for Canadian locations.
A snow day means school is fully cancelled for the day. A delay (usually 1-2 hours) means school starts later than normal to give road crews time to clear routes. Our calculator factors in delay likelihood as part of the overall closure probability.
The best time is between 7-10 PM the night before. By then, weather models have locked in on the storm track and snowfall totals, giving you the most accurate prediction. Checking again early in the morning (around 5 AM) can also catch any overnight forecast changes.
A snow day predictor is a tool that estimates the probability of school being cancelled due to winter weather. It goes beyond a weather forecast by factoring in how schools in your area typically respond to snow, ice, and cold. Our snow day predictor analyzes forecast data, your school type, and regional closure patterns to give you a percentage chance of a snow day.
It varies widely by region. In the northern US, schools may stay open through 6 or more inches of snow, while southern states often close for just 1-2 inches. The threshold depends on your district's plowing capacity, bus route terrain, and historical tolerance for winter weather. Ice accumulation typically triggers closures at lower totals than snow alone.
Your chance of a snow day depends on the weather forecast for your specific area and how your school district handles winter storms. Enter your zip code and school type in the calculator above to get a real-time snow day probability based on the latest forecast data. The prediction updates every time you check.
Yes. A two-hour delay is often the first step before a full closure, especially when a storm is expected to taper off by mid-morning. Our calculator includes delay likelihood in the overall prediction. Delays are more common when snowfall totals are moderate or when the storm timing allows roads to be cleared before a late start.
Superintendents and district officials typically make the call between 4-6 AM based on current road conditions, overnight snowfall totals, the forecast for the morning commute window, wind chill temperatures, and whether road crews have had enough time to clear bus routes. Many districts also coordinate with neighboring districts and local emergency management offices.
Yes. You can enter any US or Canadian city, zip code, or address into the calculator. We have pre-built forecast pages for over 100 major cities, but the calculator works for any location by pulling live weather data from the National Weather Service or Environment Canada.