Snow Day FAQ
Every common snow day question, answered plainly in one place.
Will there be a snow day tomorrow?
Use the calculator on our homepage with your ZIP code — it scores the next 24 hours of live forecast data. Above 75% means very likely, below 20% means unlikely. Districts often announce big storms the evening before (8–10 PM) and decide borderline ones around 4–6 AM.
What are the chances of a snow day tomorrow?
That is exactly what our probability score answers: a 0–95% estimate from expected snowfall, overnight low, wind, and 4–7 AM timing. Check the evening before and again early morning, since forecasts sharpen overnight.
Will school be cancelled tomorrow?
Only your district can say for sure. Our score estimates the weather side of the decision — heavy overnight snow, extreme cold, or high wind push it up. Always confirm with official district announcements.
How many inches of snow for a snow day?
There is no universal number. Many US districts start considering closures around 4–6 inches (10–15 cm) of overnight snow, but extreme cold (below about −15°C / 5°F) or 40+ km/h winds can close schools with far less snow.
How accurate is the snow day calculator?
It is a good estimate of weather conditions that lead to closures — strongest for obvious storms and clear non-events, weakest for borderline 3–6 cm storms where districts themselves split. Read our accuracy page for the full honest breakdown.
Is the snow day calculator free?
Yes — free, no account, no signup. We use free public weather data (Open-Meteo), so there is nothing to charge for.
Does it work in Canada?
Yes. Select the CA tab and enter your postal code (e.g. K1A 0B1) — the same live-forecast scoring applies across Canada and the US.
What is the difference between a snow day and a delay?
A delay (usually 2 hours) gives road crews extra time; a full closure cancels the day. Districts often start with a delay and upgrade to a closure if conditions don't improve — keep checking until buses run.
When do schools announce snow days?
Big storms: often the evening before, 8–10 PM. Uncertain storms: 4–6 AM after officials check real roads. Announcements go out via district text alerts, websites, local TV tickers, and robocalls.
Why didn't we get a snow day when snow was predicted?
Usually timing or plowing: snow that stops before dawn lets crews catch up, and main roads may be clear even when side streets aren't. Districts decide on bus-route safety, not just snowfall totals.
Can extreme cold cause a snow day without snow?
Yes — many districts close or delay for wind chills around −25 to −30°C (−15 to −20°F) because of frostbite risk at bus stops. Our model adds +5% for overnight lows below −10°C for exactly this reason.