West & Rockies Region•Capital: Sacramento
California Snow Day Predictor
CA
California features extreme climatic variety. While coastal and valley cities never close for snow, Sierra Nevada communities face atmospheric river blizzards that can drop 3 to 6 feet of snow in 48 hours.
Typical Closure Threshold
8 to 16 inches in Sierra districts (Tahoe, Truckee, Mammoth)
Climate Classification
Sierra Nevada Alpine & Mediterranean Coastal
Average Annual Snow Days
15–40 days (Sierra communities)
California Cities & School Districts
Select your city below for localized school closure probability forecasts and district contacts.
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Department of Transportation Plowing Operations
Caltrans maintains around-the-clock chain control checkpoints and heavy rotary blowers over Donner Pass (I-80) and Echo Summit (US-50).
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School Closure Decision Framework
Tahoe Truckee Unified and Sierra districts maintain specialized 4WD and chained bus fleets, evaluating mountain pass conditions starting at 4:30 AM.
California Snow Day FAQs
Q:Which California school districts have snow days?
Districts in the Sierra Nevada (Truckee, South Lake Tahoe, Mammoth Lakes, Big Bear) frequently experience snow days and delayed starts during major Pacific storms.