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❄️ Updated Every Hour · US & Canada
Snow Day Predictor
Will School Be Closed Tomorrow?
Real-time school closure odds powered by hourly weather data, road conditions, and local forecasts.
Enter Your Location
ZIP code, postal code, or city name
Examples: 10001 · A1A 1A1 · Denver CO · Toronto ON
Updated Hourly
NWS Weather Data
500,000+ Families Use This
US & Canada Coverage
The science behind the prediction
What Our Predictor Analyzes
Six factors — updated hourly — that determine whether your school will close tomorrow.
Snowfall Amount
4–6 inches = delays likely. 7+ inches = strong closure chance. We track hourly accumulation rates.
Temperature & Wind Chill
Sub-zero wind chills freeze road surfaces even without new snow. We factor both metrics.
Ice & Road Conditions
Black ice and freezing rain are bigger closure triggers than snow volume alone.
Morning Crunch Window
Snowfall between 4 AM and 7 AM has the highest closure impact. Superintendents decide at 5 AM.
Wind Speed
Winds above 31 mph create whiteout conditions and snowdrifts that close roads regardless of snowfall.
Historical Patterns
Each city’s past closure threshold history informs our model. Buffalo closes at lower totals than Denver.
Browse by location
Snow Day Predictor by City
Select your state or province. Every city has its own dedicated prediction page.
New York 10 cities
Michigan 10 cities
Pennsylvania 8 cities
Ohio 7 cities
Minnesota 6 cities
Massachusetts 8 cities
Colorado 6 cities
Connecticut 5 cities
Indiana 4 cities
Utah 4 cities
Vermont · Maine · NH 7 cities
Wyoming · Montana 6 cities
Midwest Plains 8 cities
Ontario 14 cities
Quebec 8 cities
Alberta 6 cities
British Columbia 5 cities
Nova Scotia · NB · NL 7 cities
Why ours is more accurate
The Morning Crunch Advantage
Most calculators give you a daily snowfall total and call it a prediction. We analyze what actually matters.
❌ Generic Snow Calculators
→ Update every 6–12 hours
→ Show total daily snowfall only
→ No city-specific closure thresholds
→ Ignore timing of snowfall
→ Same formula for Buffalo and Miami
✅ Snow Day Predictor
✓ Updated every hour — storm conditions change fast
✓ Tracks the 4 AM–7 AM Morning Crunch window
✓ City-level thresholds based on local closure history
✓ Wind chill + black ice + road surface temperature
✓ Separate pages for 300+ US and Canada cities
Common questions
Frequently Asked Questions
How accurate is the Snow Day Predictor?
Accuracy is highest in regions with consistent snow patterns — typically 80–90% in high-snow cities like Buffalo or Duluth. Predictions are probabilistic, not guaranteed. Check back every hour as forecasts update.
What time does the school district decide on closures?
Most US and Canadian school superintendents make closure decisions between 4:00 AM and 6:30 AM. Our predictor specifically weights the 4–7 AM window because that’s the actual decision window.
Why did my prediction change overnight?
Winter storm forecasts update constantly. A storm that was tracking 30 miles east at midnight might shift west by 4 AM. We update every hour so your prediction reflects the latest available data.
Does this cover all cities in the US and Canada?
We cover 300+ cities across all snow-relevant US states and Canadian provinces. Enter any ZIP code, postal code, or city name and we will find it — even smaller towns not listed in our city grid.
Is the Snow Day Predictor free to use?
Completely free, no account required. Our tool is supported by display advertising and is used by over 500,000 families across North America every winter season.
How much snow typically closes school?
It varies by city. Buffalo closes at 4 inches. Denver schools might stay open with 6 inches. Southern cities sometimes close at 1 inch of accumulation. Our city-specific pages account for these regional differences.