Snow Day Calculator

Calculate the probability of a school closing due to snow based on weather forecast.

Hoping for a snow day? This calculator uses a simple point-scoring heuristic that considers snowfall amount, timing, temperature, and road conditions (district type) to estimate the probability of school cancellation.

Calculator Inputs

Predicted Snowfall*

inches

How much snow is predicted to accumulate?

Temperature*

°F

Forecasted low temperature

Snow Start Time*

School District Type*

Results

Enter values above to see your results

This is an entertainment estimate. The score is a fixed point system based on the four inputs; it does not use weather forecasts, road data, or any school district's actual closure history or policy. Check your district's official announcements for real closures.

How It Works

Enter the forecasted snowfall amount, the temperature, when the snow is expected to start, and what kind of area your school is in. We calculate a "Cancellation Probability Score" based on these factors.

Worked example

The "Sure Thing" Scenario

Snowfall:6 inches= High Impact

Timing:Overnight= High Impact

District:Rural= High Impact

Calculation:Base 40% + 20% + 20% + 15%= 95% Chance

The "Delay" Scenario

Snowfall:2 inches= Low Impact

Timing:5 AM - 7 AM= Medium Impact

Temp:28°F= Freezing

Prediction:Moderate chance of delay= 45% Chance

Tips & Best Practices

•Ice storms have a much higher chance of closing schools than just snow.
•Rural schools often close earlier because back roads are harder to plow.
•If it snows overnight, buses can't run safely in the morning.

Frequently Asked Questions

How accurate is this calculator?

This calculator is a fun estimation tool based on common criteria superintendents use. Actual decisions depend on road crews, timing, and local policies.