Climate Change and Snow Days: Are Snow Days Becoming Less Common?

Climate change can influence how often conditions are cold enough for snow, but the relationship between warming and snow days is not as simple as “warmer climate equals no snow.” Snowfall trends differ by region, season, elevation, storm track, and temperature.

What NOAA data shows

NOAA Climate.gov has reported a long-term decline in January–March snowfall across much of the contiguous United States since the late 1950s, while some colder northern areas have shown increases during parts of winter. NOAA also notes that a warmer atmosphere can hold more moisture, so large snowstorms can still occur when temperatures remain cold enough for snow.

Read NOAA Climate.gov’s discussions of long-term snowfall trends and North American snowfall variability.

Why snow-day trends are local

A school closure depends on more than seasonal snowfall totals. A single overnight ice event, an unusually timed storm, extreme cold, road treatment, transportation policy, and local infrastructure can all matter. A region can therefore experience fewer snowy days overall while still having disruptive individual storms.

What this means for a snow-day predictor

A useful predictor should respond to the live forecast rather than assume that every winter behaves like the historical average. Our Snow Day Calculator & Predictor uses current weather signals, and the Snow Day Risk Map compares tomorrow’s disruption signal across selected snow-prone markets.