Its accuracy hasn’t been measured yet: the formula hasn’t been checked against real school closing records, so treat the percentage as an estimate, not a reliable prediction.

The hourly Open-Meteo forecast for the place you search, from 6 pm to 8 am: snowfall, temperature, wind gusts and freezing rain or drizzle. It doesn’t use radar, road reports or school announcements.

No. This site isn’t affiliated with any school, district or weather service. Always check your district’s own announcements.

Yes. It’s another name for a snow day calculator or predictor. It estimates the chance of a full closure from the overnight forecast; it doesn’t know official closings.

It’s a score built from the forecast and the published rules in How it works, not a measured probability: 70% doesn’t mean schools closed on 7 of 10 similar mornings. 60% or higher reads Likely, 30–59% Maybe, and under 30% No Chance.

Forecasts change overnight, and districts weigh things a forecast can’t show, such as road crews, bus routes and staffing. The result is always kept between 1% and 99% to reflect that uncertainty.

It checks the next school morning in the searched place’s time zone: today before 6 am on a weekday, otherwise the next weekday. It doesn’t know holidays, breaks or teacher work days.

There’s no national rule; each district decides. Places that rarely see snow may close for an inch or two, while snowy regions often stay open through several inches, and timing, ice and road clearing matter too. In this calculator, about 2 inches (5 cm) of overnight snow on its own reads Maybe and a little over 4 inches (10 cm) reads Likely, with snow points halved if it’s above 34°F (1°C) at 7 am.

Yes. Freezing rain can coat roads with ice, and bitter cold can make bus stops unsafe, so districts sometimes close for either. The calculator adds 30 to 65 points for freezing rain or drizzle, depending on how many hours it lasts, and 10 points at 0°F (−18°C) or colder at 7 am (20 at −15°F, or −26°C, or colder). A long night of freezing rain alone can reach Likely; cold alone stays in No Chance.

A snow day closes school for the whole day. A delay (often 2 hours) starts school later so crews can clear roads, and an early dismissal sends students home when weather worsens during the day. The calculator only estimates a full closure on the next school morning.

Some districts and school boards now hold online classes instead of closing. The calculator estimates whether weather may close school buildings, not whether classes move online.

Only your school district or school board can say for sure. For a forecast-based estimate of the chance, enter your city or ZIP code in the calculator at the top of this page; on a Friday or a weekend it checks Monday.

It varies. Many districts and school boards announce the evening before when a storm is certain, or early in the morning, often between 5 and 6:30 am. Check their website or local news.

No one knows until a district announces it. This calculator (sometimes called a no school calculator) estimates the next school morning and lists the next 5 school days under the result; days 3 to 5 are an early outlook that often changes.

It uses the weather for the town you search, not your district’s closing policy. The optional “Sharpen your prediction” questions let you describe how easily it closes, your roads and your school type.

Type a city name or a 5-digit US ZIP code; US and Canadian places are checked first, and short forms like St, Ft and DC work. If the wrong town comes up, add a state, province or country after a comma, like “Portland, OR”, “London, ON” or “Paris, France”. Canadian postal codes aren’t supported yet, so type the town. Before using a place outside the US and Canada, the calculator asks first. US places show °F, inches and mph; Canadian places show °C, centimeters and km/h.

Yes. Canadian school boards close schools or cancel buses for heavy snow, freezing rain or extreme cold. This calculator works for Canadian towns, in °C and centimeters.

No. It estimates the chance of a school closure from the forecast. In much of Canada buses can be cancelled while schools stay open, so check your school board or bus service.

The evening before, and again early in the morning, since overnight forecasts often change. Before 6 am on a weekday it shows that same morning.

Each answer multiplies the weather points (not the starting point): a district that closes rarely ×0.7 or easily ×1.75; city roads ×0.9, rural or hilly ×1.2; private school ×0.95, college ×0.6. Skipping a question, or choosing Average, Suburbs or Public, changes nothing.

It opens a Google search for school closings in the place you found, in a new tab. The calculator doesn’t check closings itself and can’t confirm whether your school is closed.

No. There are no accounts, cookies or saved history, and nothing is kept in your browser’s storage. Your search and answers are forgotten when you close or reload the page.

To get the forecast, your browser sends the city name or ZIP code you type (the part before any comma) to Open-Meteo’s place search, then the found place’s map coordinates to Open-Meteo’s forecast. Fonts load from this site. Google sees the place name only if you tap “Is my school closed?”. Page visits are counted by Cloudflare Web Analytics, without cookies, without tracking you across sites and without collecting personal details. Like any website, these services can see your IP address. The share card is made on your own device. Full details are in the Privacy Policy.