Snow Day Probability
☀️ Chance of school cancellation tomorrow
Data provided by Open-Meteo
The Chicago area school districts in Illinois together serve thousands of students across many public, charter, and private campuses. The Chicago area averages approximately 26 inches of snowfall per year, with the heaviest snowfall typically occurring between December and March.
School districts in Chicago generally post closure decisions to district websites and notify parents through automated alerts and local broadcasters, typically before sunrise on storm days, after coordinating with bus contractors and transportation supervisors. Two-hour delays and remote-learning days are sometimes used in Chicago as alternatives to a full closure when conditions are borderline.
Chicago's geography plays a meaningful role in its winter weather: a humid continental climate exposed to Lake Michigan moisture and Arctic outbreaks from the north. These factors directly influence how often Chicago schools end up closed during a given winter. Geographically, Chicago sits near 41.88°N, 87.63°W, which shapes how regional storm systems and Arctic air masses interact with the area.
Notable historic snow events in or near Chicago include the Groundhog Day Blizzard of 2011 which dropped two feet on Chicago, which produced widespread closures across the region. Historically, schools in the Chicago area close an average of approximately 3 days per winter season due to snow, ice, or extreme cold. Use our Snow Day Calculator above to check tomorrow's real-time school closure probability for Chicago based on live weather forecast data from Open-Meteo.
Chicago schools face brutal winters every year. Wind chills and lake-effect snow from Lake Michigan often lead to cancellations across CPS and suburban districts.
Browse all Illinois snow day predictions.
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No snow or ice expected this week; schools unlikely to close due to precipitation or temperature extremes.
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 calculator pulls live weather forecast data for Chicago from the Open-Meteo API and analyzes snowfall accumulation, temperature, wind chill, and 24-hour precipitation totals to generate a school closure probability percentage.
Check between 9 PM and midnight the evening before a potential storm. Weather models are most reliable within a 12–18 hour forecast window, giving you the most accurate prediction for the following morning.
Yes. Public schools close more readily than private schools, which close more readily than colleges and universities. Select your school type for the most accurate Chicago prediction.