Snow Day Calculator — Will School Be Cancelled Tomorrow?
A snow day calculator estimates the probability that school will be cancelled tomorrow using live weather forecast data. Enter your US ZIP code and it weighs expected snowfall, temperature, wind chill, and the day of the week to produce a data-driven chance of a closing.
Snowfall is the biggest driver: 3–4 inches sharply raises cancellation odds, and 6+ inches almost guarantees a snow day in regions unused to heavy snow, while northern districts with strong snow removal may need 8–12 inches. Powered by live Open-Meteo forecasts for any US location.
Frequently Asked Questions
How accurate is the snow day calculator?
Our calculator uses real-time weather forecast data from Open-Meteo to estimate the probability of a snow day. It considers snowfall amount, temperature, wind speed, and day of week. While no prediction is perfect, the calculator gives you a data-driven estimate based on conditions that historically lead to school closings.
What factors affect school cancellations?
The main factors are total snowfall (the biggest driver), temperature and wind chill, road conditions, timing of the storm, and whether it falls on a Friday (less likely to cancel) or Monday (more likely). District policies and regional snow tolerance also play a role.
What snowfall amount usually causes a snow day?
In most regions, 3-4 inches of snow significantly increases cancellation chances. 6+ inches almost guarantees a snow day in areas not accustomed to heavy snow. However, northern states with robust snow removal may need 8-12 inches before cancelling.
Does this work for any US location?
Yes, enter any US ZIP code and we will fetch the weather forecast for that exact location. The calculator works for all 50 states.