Snow Day Probability
☀️ Chance of school cancellation tomorrow
Data provided by Open-Meteo
The the public, charter, and private school districts serving the greater Charleston area together serve thousands of students across many public, charter, and private campuses. The Charleston area averages approximately 4 inches of snowfall per year, with the heaviest snowfall typically occurring between December and February.
School districts in Charleston 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 Charleston as alternatives to a full closure when conditions are borderline.
Charleston's geography plays a meaningful role in its winter weather: a humid subtropical climate where any measurable snowfall typically closes schools for multiple days. These factors directly influence how often Charleston schools end up closed during a given winter. Geographically, Charleston sits near 32.78°N, 79.94°W, which shapes how regional storm systems and Arctic air masses interact with the area.
Notable historic snow events in or near Charleston include the January 2018 winter storm that brought rare snowfall to the coast, which produced widespread closures across the region. Historically, schools in the Charleston area close an average of approximately 2 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 Charleston based on live weather forecast data from Open-Meteo.
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Our calculator pulls live weather forecast data for Charleston 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 Charleston prediction.