Snow Day Probability
☀️ Chance of school cancellation tomorrow
Data provided by Open-Meteo
Thunder Bay is located in Ontario and is served by the public and Catholic school boards that serve Thunder Bay, alongside several private and independent schools in the surrounding region. The Thunder Bay area averages approximately 134 centimetres of snowfall per year, with the peak snow season typically running from December to March.
In Ontario, cancellation decisions are posted to school board websites and shared on local radio and television stations, generally by 6:00 AM, after consultation with bus operators and road authorities. Bus cancellations in the Thunder Bay area are often announced separately from in-person school closures, and parents are encouraged to monitor official channels each winter morning.
Thunder Bay's location features a Great Lakes climate where lake-effect snow off Lakes Huron, Erie, and Ontario produces heavy localized snowfall, which means winter conditions in and around Thunder Bay can vary significantly from one year to the next. Freezing rain, heavy snow, blowing snow, and extreme wind chill are all common reasons for closures. Geographically, Thunder Bay sits near 48.43°N, 89.22°W, which influences how regional storm systems track across the area.
Historically, schools in the Thunder Bay area close an average of approximately 8 times per winter season due to snow, ice, or extreme cold weather. Use our Snow Day Predictor above to check tomorrow's real-time school closure probability for Thunder Bay based on live weather forecast data from Open-Meteo.
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No snowfall or significant ice risk this week; schools likely open daily due to mild temperatures and precipitation in liquid form.
Generated by AI from 7-day Open-Meteo forecast. Snow day predictions are probability estimates based on weather forecast data. School closure decisions are made by local school administrators — always verify with your school's official website, app, or local news for confirmed cancellations.
Our predictor pulls live weather forecast data for Thunder Bay from the Open-Meteo API and analyzes snowfall accumulation, temperature, wind chill, and 24-hour precipitation totals to generate a school closure probability percentage for local school boards.
Check between 9 PM and midnight the evening before a potential storm. Weather forecast models are most reliable within a 12–18 hour window, giving you the most accurate prediction.
School boards in Ontario typically announce cancellations through their official website, social media channels, and local radio stations, usually before 6:00 AM on storm days. Bus cancellations are sometimes announced separately from full school closures.