Snow Day Probability
☀️ Chance of school cancellation tomorrow
Data provided by Open-Meteo
The San Antonio Public Schools and surrounding Texas districts together serve thousands of students across many public, charter, and private campuses. The San Antonio area averages approximately 0 inches of snowfall per year, with the heaviest snowfall typically occurring between December and February.
School districts in San Antonio 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 Antonio as alternatives to a full closure when conditions are borderline.
San Antonio's geography plays a meaningful role in its winter weather: a humid subtropical to semi-arid climate where rare cold-air outbreaks can shut down districts statewide. These factors directly influence how often San Antonio schools end up closed during a given winter. Geographically, San Antonio sits near 29.42°N, 98.49°W, which shapes how regional storm systems and Arctic air masses interact with the area.
Notable historic snow events in or near San Antonio include the February 2021 winter storm Uri that paralyzed the state for nearly two weeks, which produced widespread closures across the region. Historically, schools in the San Antonio 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 Antonio based on live weather forecast data from Open-Meteo.
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No snow or ice expected this week; warm temperatures and minimal precipitation make closures unlikely.
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 San Antonio 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 Antonio prediction.