Snow Day Calculator – Will School Be Cancelled Tomorrow?
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❄ Winter Weather Tool
Snow Day Calculator
Will school be cancelled tomorrow? Enter tonight's forecast and get an instant probability score.
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Tonight's Weather Conditions
Expected Snowfall6 in
0 in6 in12 in24 in36+ in
Morning Temperature28°F
−20°F0°F20°F40°F
Wind Speed15 mph
Calm15304560 mph
Visibility
Road Conditions
School District Type
⚡
Additional Factors
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0%Probability
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How Does the Snow Day Calculator Work?
Our Snow Day Calculator uses a weighted scoring algorithm based on the same factors that school superintendents evaluate when making closure decisions. Each weather variable contributes a different weight to the final probability score.
Key Factors We Measure
Snowfall Amount — The biggest single factor. Districts rarely cancel for under 2 inches, but 8+ inches overnight almost always results in closure.
Temperature & Wind Chill — Dangerously cold temperatures can trigger "cold days" even without snow. Wind chill below −15°F is a strong cancellation signal.
Road & Visibility Conditions — Bus safety is the top priority. Icy roads or near-zero visibility significantly raise cancellation probability.
Ice vs. Snow — Freezing rain and ice storms are more dangerous than equivalent snowfall and raise cancellation odds dramatically.
Frequently Asked Questions
Most school districts make their decision between 4:00 AM and 6:00 AM on the day in question. Decisions are posted on the district website, local news stations, and via automated phone/text alerts. Some districts decide the evening before for very severe storms.
This tool provides an estimated probability based on commonly used decision factors. Actual decisions vary by district, superintendent, and local conditions. Use it as a guide, not a guarantee. Always check official school district announcements.
Rural districts typically have longer bus routes on less-maintained roads, fewer sidewalks, and students who travel greater distances. Urban districts have more walkable infrastructure, city road crews that clear streets faster, and tend to be more conservative with snow days.
Yes — black ice and freezing rain are far more dangerous for buses and pedestrians than equivalent amounts of snow. Even a thin ice coating on roads can make driving treacherous and greatly increases the likelihood of school closure or delay.
