Climate change in Windham County, Vermont
Since 1979, Windham County, Vermont has warmed 2.9°F, with 2 more days above 90°F, about the same number of nights above 70°F and 8% more precipitation a year. Its climate in 1996–2025 is most like Sullivan County, NY's was in 1951–1980.
- Average temperature: +2.9°F
- Summer highs (Jun–Aug): +2.0°F
- Winter lows (Dec–Feb): +6.0°F
- Precipitation: +8%
- Wettest day of the year: +1%
- Longest dry spell: +2 days
- Days above 90°F: +2 days
- Nights above 70°F: +0 days
- Freezing nights: −15 days
- Frost-free season: +36 days
- Muggy days: +5 days
- Summer heat index (Jun–Aug): +2.7°F
- Extreme fire-weather days: +13 days
- Snowfall: +43%
- Snowy days (1 inch or more): +2 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.