Snow Day Predictor

The snow day calculator estimates a longer-running, historical-and-seasonal probability for your area. The snow day predictor is a single-day, forecast-driven estimate for tomorrow specifically. It takes the overnight snowfall forecast, the overnight low, and the precipitation chance from your local weather, then blends in school type and region. Use the calculator when you want a season-level baseline. Use the predictor the night before, with a fresh forecast in hand.

The heuristic subtracts 25 percentage points when college is selected. That is a fixed model assumption, not a measured probability for a specific campus. Colleges can close, delay, or move classes online based on local roads, transit, staffing, and policy.

The heuristic adds 20 percentage points for its southern setting and subtracts 10 for its northern setting. Those are broad assumptions about regional preparedness, not local measurements. Choose the setting that best reflects local winter operations, then rely on the district's official decision.

Treat the band as uncertain and check the district website, alert system, or other official channel. Announcement timing varies by district and conditions, so keep the normal plan unless the district confirms a change.

No. The predictor is a heuristic, not a model your district uses. Real cancellation decisions depend on local plow contracts, bus garage staffing, parental complaints from the last storm, and a superintendent's read of the overnight radar. The predictor blends a few signals that move with those calls in aggregate, but it does not know your specific district's tolerance. Use it as a planning aid, not a guarantee.