Snow Day Probability
☀️ Chance of school cancellation tomorrow
Data provided by Open-Meteo
The the public, charter, and private school districts serving the greater Green Bay area together serve thousands of students across many public, charter, and private campuses. The Green Bay area averages approximately 49 inches of snowfall per year, with the heaviest snowfall typically occurring between November and March.
School districts in Green Bay generally communicate closures via district websites, robocalls, social media, and local news, with most calls made between 4:30 and 6:00 AM after consultation with road crews and the National Weather Service. Two-hour delays and remote-learning days are sometimes used in Green Bay as alternatives to a full closure when conditions are borderline.
Green Bay's geography plays a meaningful role in its winter weather: a humid continental climate with lake-effect snow, Arctic outbreaks, and frequent dangerous wind-chill closures. These factors directly influence how often Green Bay schools end up closed during a given winter. Geographically, Green Bay sits near 44.48°N, 88.02°W, which shapes how regional storm systems and Arctic air masses interact with the area.
Notable historic snow events in or near Green Bay include major lake-effect snow events off Lake Superior and Lake Michigan, which produced widespread closures across the region. Historically, schools in the Green Bay area close an average of approximately 7 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 Green Bay based on live weather forecast data from Open-Meteo.
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Our calculator pulls live weather forecast data for Green 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.
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 Green Bay prediction.