Snow Day Probability
☀️ Chance of school cancellation tomorrow
Data provided by Open-Meteo
The San Jose Public Schools and surrounding California districts together serve thousands of students across many public, charter, and private campuses. The San Jose area averages approximately 4 inches of snowfall per year, with the heaviest snowfall typically occurring between December and February.
School districts in San Jose generally announce closures through their official websites, automated phone calls, local TV, and radio stations, with most decisions made by the superintendent in the early morning hours, typically by 5:00 AM on storm days. Two-hour delays and remote-learning days are sometimes used in San Jose as alternatives to a full closure when conditions are borderline.
San Jose's geography plays a meaningful role in its winter weather: a Mediterranean to semi-arid climate where snow at low elevations is unusual but mountain passes routinely close. These factors directly influence how often San Jose schools end up closed during a given winter. Geographically, San Jose sits near 37.33°N, 121.89°W, which shapes how regional storm systems and Arctic air masses interact with the area.
Notable historic snow events in or near San Jose include the rare Sierra-related winter storms that have spilled into the lowlands, which produced widespread closures across the region. Historically, schools in the San Jose area close an average of approximately 0 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 San Jose based on live weather forecast data from Open-Meteo.
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Our calculator pulls live weather forecast data for San Jose 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 San Jose prediction.