Snow Day Calculator.
Will school be closed tomorrow because of snow? Enter a US ZIP code, Canadian postal code or UK postcode to check the next school-day risk from the latest winter-weather forecast.
Snow day chance
Choose a country and enter a ZIP or postal code to check the next school day.
Weather-based estimate only. Your school, district or local authority makes the final closure or delay decision.
Will school be closed tomorrow because of snow?
The calculator gives a quick weather-based estimate for the next school morning. It looks for snow or sleet from the previous evening through the morning commute, then considers freezing temperatures and strong wind before returning a snow-day chance.
A high percentage means the forecast contains several conditions that can disrupt school travel; it does not mean a closure is confirmed. Check your school, district, council or local authority for the official decision.
What can increase the chance of a snow day?
Storm timing matters as much as the headline snowfall. Snow that continues through the early-morning commute can be more disruptive than a similar amount that ends well before roads and school transport start moving.
Sleet, icy conditions and temperatures at or below freezing can raise travel risk even when snow totals are modest. Strong winds can add poor visibility and drifting or blowing snow to the same morning forecast.
Local closure policies also differ. Two nearby schools can make different decisions because of road networks, school-bus routes, rural travel, staffing and local conditions.
Snow Day Calculator for the US, Canada and UK
United States: enter a 5-digit ZIP code to check the next school-day forecast and closure risk for that area.
Canada: enter a Canadian postal code to check the next school-day risk with temperatures shown in both Celsius and Fahrenheit.
United Kingdom: enter a UK postcode to estimate the effect of wintry weather on the next school day. Always confirm closures with the school or local authority.
When should I check my snow day chance?
The evening before school is useful for an early indication. Check again early in the morning when the storm is close enough for its timing, precipitation type, temperature and wind forecast to be clearer.
When enough forecast data is available, the result also shows a compact outlook for later school days so you can see whether the risk is limited to one morning or continues into the week.
Forecast data: MET Norway
Frequently asked questions
Will my school be closed tomorrow because of snow?
The calculator estimates the weather risk for the next school morning, but it cannot confirm a closure. Your school, district, transport provider, council or local authority makes the official decision.
How accurate is the Snow Day Calculator?
It is a transparent weather-risk estimate rather than a claimed school-specific probability model. Forecasts and local closure decisions can change, so use the percentage as a planning guide and verify official announcements.
What weather conditions increase the chance of a snow day?
Snow or sleet during the morning commute, longer-lasting wintry precipitation, freezing temperatures and strong winds can all increase the estimate.
Does freezing rain or sleet matter even if snowfall is low?
Yes. Icy precipitation and freezing conditions can make roads and pavements difficult even when snowfall itself is limited, so sleet is included as a separate risk factor.
Does the calculator work in Canada?
Yes. Enter a Canadian postal code to check the next school-day weather risk for the area.
Does the calculator work in the UK?
Yes. Enter a UK postcode. The result is still only an estimate; official school closures should be checked with the school or local authority.
When should I check my snow day chance?
Check the evening before for an early view, then check again closer to the morning commute because storm timing and precipitation type can change.
Why can two nearby schools make different closure decisions?
Schools can have different bus routes, rural-road exposure, staffing, local policies and site conditions. The same weather therefore does not guarantee the same decision everywhere.
Does the calculator know school holidays or planned closures?
No. It skips weekends when choosing the next weekday, but it does not know every school's calendar, teacher-training days or planned closures.