A Snow Day Predictor is a smart online snow day forecast tool that estimates the chance of a snow day by analyzing real-time weather data, snowfall forecasts, wind chill, icy road conditions, and other local factors. It gives students, parents, and school administrators a quick idea of whether classes might be canceled or delayed the next day — especially during heavy snowfall or severe winter storms.
The first version of a Snow Day Calculator dates back to 2007, created as a fun middle-school project. At that time, users manually entered weather information, such as inches of snow or wind speed, to get a basic snow day prediction score. Over the years, these tools evolved significantly and now use advanced weather alerts, National Weather Service data, and historical snow patterns to deliver far more accurate predictions.
The amount of snow is one of the strongest indicators.
Tools also evaluate expected snowfall, snow accumulation rate, and how much snow is predicted in real-time weather updates.
Freezing temperatures increase the chances of icy roads. Combined with low wind chills, road conditions become dangerous for buses and commuters, raising the likelihood of a snow day.
Strong winds above 31 mph can create:
These factors often push school districts to cancel classes.
Black ice, freezing rain, or slick highways are major red flags. If icy roads make traveling unsafe, especially early in the morning, many schools opt for cancellation.
Snowfall happening during school commute hours (5–7 AM) has the highest impact on closure decisions. Even moderate snow at the wrong time can trigger delays or cancellations.
Just enter your location — the tool handles the rest.
Pulls the latest NWS and local weather data for accurate predictions.
Snowfall predictions, past storm patterns, and district policies help refine results.
Check snow day chances from anywhere.
Assists decision-makers in planning closures quickly during winter storms.
Families across the United States and Canada rely on it for safe and stress-free winter mornings.
Click a location to auto-fill the Snow Day Predictor.
A reliable Snow Day Predictor helps you see whether there’s a high chance of school cancellations based on snowfall, wind chill, icy roads, and severe weather. While no tool can guarantee perfect accuracy, modern predictors use advanced weather sources, real-time data, and historical patterns to estimate the likelihood of a snow day tomorrow with impressive precision.
Whether you’re a parent planning ahead, a student hoping for a day off, or a school administrator managing winter policies, a Snow Day Calculator gives you clarity, convenience, and peace of mind during the winter season.
Some believe in fun rituals, but real snow days depend only on weather conditions, severe storms, and district safety policies.
Most online tools — including ours — are completely free.
Yes, most tools work across the United States and Canada, using postal or ZIP codes.
Ottawa is one of the coldest major cities in North America, especially in January and February.
Yes, most snow day calculators offer instant predictions on phones and tablets.
Accuracy can be very high in regions with consistent snow patterns. Still, predictions are probabilistic, not guaranteed.