Prediction for Thornhill, ON L3T 0A1
Snow Day Prediction
0-55%
55-75%
75-87%
87-99%
Snow Day Probability Index
| Limited | No chance due to low precipitation chance. |
| 0%-55% | Little to no chance of anything, but possible. |
| 55%-75% | Delay Likely. |
| 75%-87% | Possibility of No School. |
| 87%-99% | No School or Possible Early Dismissal. |
⚠️ Active Weather Alerts
📋 Current Weather Summary
Partly cloudy
58°F
9 km/h
Today’s Weather
Tomorrow’s Weather
Wondering whether schools will be closed in Thornhill, Ontario? The latest snow day probability for Thornhill is 0% — Clear Skies. Enjoy School!. Current conditions are around 58°F with partly cloudy. Thornhill is located in Ontario, Ontario. This forecast updates throughout the day as new weather data arrives, so check back the night before and early in the morning for the most accurate snow day prediction for Thornhill, Ontario.
Snow Day FAQ — Thornhill
Will there be a snow day in Thornhill, Ontario today?
The current snow day probability for Thornhill today is 0% — Clear Skies. Enjoy School!. This estimate is based on the latest local weather forecast for Thornhill, Ontario, including temperature, expected snowfall, wind, and any active winter weather alerts.
What is tomorrow's snow day forecast for Thornhill, Ontario?
Tomorrow's snow day probability for Thornhill is 0% — Clear Skies. Enjoy School!. Check back the night before, as the forecast updates as the storm system gets closer.
How is the Thornhill snow day prediction calculated?
We combine the local forecast for Thornhill, Ontario — snowfall accumulation, temperature, wind speed, and official winter storm warnings or advisories — into a probability score for school closures. Heavier snow, colder temperatures, high winds, and active alerts all increase the chance of a snow day.
When will I know if Thornhill schools are closed?
Most school districts near Thornhill, Ontario announce closures or delays either the evening before or early in the morning (usually by 5–6 AM). Use this page as an early indicator, and always confirm with your official school district or local news.
Snow Day Predictions for Nearby Cities
Snow Day Probability Index
| Limited | No chance due to low precipitation chance. |
| 0%-55% | Little to no chance of anything, but possible. |
| 55%-75% | Delay Likely. |
| 75%-87% | Possibility of No School. |
| 87%-99% | No School or Possible Early Dismissal. |
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