Snow Day Hub
Idaho Snow Day Calculator
Idaho gets 42 inches of snow per year — but not every storm closes school. Live snow day probability for 9 Idaho cities, calibrated to local closure thresholds.
Idaho has one of the most snow-hardened school cultures in the country. Across the 9 Idaho cities covered by SnowSense™, average annual snowfall is 42 inches, with Ketchum receiving up to 120 inches in a typical winter. Despite that volume, Idaho districts close school less often than mid-Atlantic districts do — kids, buses, and roads here are built for winter.
What closes Idaho schools isn't snow accumulation — it's wind chill, ice, or infrastructure failure. Sustained wind chills below −30°F trigger safety-driven cold-day cancellations under most Idaho districts' protocols. A foot of powder, by contrast, is usually just Tuesday.
The city links above show live snow day probability for every covered Idaho city. SnowSense™ weighs wind-chill risk separately from accumulation for Idaho, so a frigid-but-clear day can still register a probability spike when accumulation-only models would show zero.