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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scene Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
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The live forecast above shows the real-time conditions that determine a snow day. For most Ontario school boards, including Toronto, Ottawa, and the Peel region, a snow day is declared when overnight and early-morning snowfall reaches 10–15 centimetres or wind chill drops below –30°C.
How does the snow day predictor work across Ontario?
The instant weather snow day predictor relies on Environment Canada alerts and local school board thresholds. A snow day tomorrow is likely when the morning commute coincides with heavy snow or extreme cold. For Ottawa and the GTA, the Ottawa Weather and Toronto Weather pages track these triggers in real time. The instant weather snow day map on our site overlays school board zones with live radar, so you can see at a glance whether your area is at risk.
What should families and travellers know about timing?
Decisions are typically made by 6:00 a.m. local time. For those asking “will it be a snow day tomorrow Ontario schools,” the answer often depends on the rate of snowfall overnight. The quickest way to check is to consult the live forecast above and the Weather Warning page. If you are planning a March-break trip or snowbird departure, note that the highest snow-day probability in Ontario falls between mid-January and late February.
What is the instant weather snow day map?
It is a live overlay on our Canada weather hub that combines Environment Canada radar data with school board boundaries. You can zoom into Peel, Ottawa, or Toronto to see current snowfall rates and compare them to local closure criteria.
How reliable is the snow day predictor for tomorrow?
The predictor is accurate within 80–90% when a winter storm warning is active by 9 p.m. the previous evening. Always verify with the live forecast above and your school board’s official notification before making plans.
Does the Peel snow day policy differ from Toronto?
Yes. Peel Region tends to close slightly earlier at 10 cm of snow, while Toronto’s threshold is closer to 12–15 cm. Both boards also consider road conditions and wind chill. Check our Toronto Weather and Ottawa Weather pages for board-specific details.