Snow Day Calculator

Will school be canceled? Enter the weather conditions to find out.

Is school going to be canceled tomorrow? Our snow day calculator estimates the probability of a snow day based on the key factors school districts weigh when they make the call: overnight snow accumulation, temperature, wind chill, and how early snow arrives. While no tool can guarantee what a district decides, this predictor helps families plan child care, work-from-home days, and last-minute schedules when the forecast calls for winter weather. Built from the same inputs meteorologists and superintendents consider, it is fun for kids and useful for parents.

Weather Conditions

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How to Use the Snow Day Calculator

Our free snow day calculator predicts the probability of school cancellation based on local weather conditions. Enter the temperature (in °F), expected snow accumulation (in inches), wind speed (in mph), and select your district type (rural, suburban, or urban) for a personalized probability score.

Example Scenarios

  • 6 inches of snow at 28°F with 15 mph wind (Suburban): High probability of cancellation. Heavy snow and gusty winds create dangerous travel conditions.
  • 2 inches of snow at 32°F with 5 mph wind (Urban): Low probability. Urban areas with well-maintained roads rarely close for light snow.
  • 10 inches of snow at 10°F with 30 mph wind (Rural): Near-certain snow day. Extreme cold, heavy accumulation, and high winds make rural roads impassable.

Frequently Asked Questions

How does the Snow Day Calculator work?
Our calculator analyzes temperature, snow accumulation, wind speed, and district type to calculate the probability of school cancellation. Colder temperatures, more snow, higher winds, and rural districts all increase the probability score.

What weather conditions cause a snow day?
Typically 6+ inches of snow accumulation with temperatures below freezing and high winds result in a high probability of school cancellation. However, each school district has its own threshold based on local infrastructure and resources.

What temperature causes school closures?
Most schools close when temperatures drop below -20°F (-29°C) or when wind chill makes it dangerously cold. Extreme cold can be just as impactful as heavy snow for closure decisions.

Do private schools follow the same closure rules?
Private schools may have different policies. Some follow the local public school district's decisions, while others make independent determinations based on their own transportation and facility considerations.

Is the Snow Day Calculator accurate?
This calculator provides an estimate based on common school district decision factors. Results are for guidance only — always check your official school district announcements for the final decision.

Also check out our other tools: Grade Calculator, Age Calculator, and Tip Calculator.