Lewiston, Idaho Snow Day Calculator
Real-time probability that schools in Lewiston, Idaho will be cancelled tomorrow, based on live forecast data and local closure thresholds.
It's 73°F — no snow day expected.
No Snow Day Risk
Real-time probability that schools in Lewiston, Idaho will be cancelled tomorrow, based on live forecast data and local closure thresholds.
It's 73°F — no snow day expected.
6–12 inches of wet snow
Lewiston gets significant snowfall but also gets rapid clearing from dry air and Chinook winds. A foot of snow can fall and melt in 24–48 hours — which means districts here focus on the melt-freeze cycle (overnight ice on roads cleared yesterday) as much as on fresh accumulation. Temperature swings of 40–60°F in a single day are normal, and that's what actually determines road conditions in the morning.
Lewiston sits at elevation, which means the air is drier and the snow is lighter and more easily plowed than eastern snow of equal depth. A six-inch powder event in Lewiston is equivalent to maybe two inches of wet snow in the northeast — easier for plows, easier for drivers, less likely to close schools. What does close schools here is the subsequent melt/freeze: daytime sun melts cleared pavement, overnight cold refreezes it to black ice, and the morning drive is dangerous even though no new snow has fallen.
Nearby mountain districts see dramatically more snow than Lewiston proper. Teachers who commute from the foothills or mountain towns may face impassable roads even when Lewiston's roads are clear. That cross-district staffing problem sometimes drives closures that surprise parents in the city itself.
Lewiston averages 22 inches of snow per year but benefits from frequent Chinook wind events that can melt several inches in hours. Schools typically close 3–5 times per winter, primarily for storms that exceed plow capacity or generate ice conditions.
SnowSense™ models mountain-west melt/freeze dynamics explicitly — conditions that eastern snow-day models miss. Live probability for Lewiston refreshes every 30 minutes.
Idaho · 297 words of Lewiston-specific context
Live forecasts within driving distance of Lewiston