Climate change in New London County, Connecticut
Since 1979, New London County, Connecticut has warmed 3.1°F, with 1 more days above 90°F, 7 more nights above 70°F and 5% less precipitation a year. Its climate in 1996–2025 is most like Westchester County, NY's was in 1951–1980.
- Average temperature: +3.1°F
- Summer highs (Jun–Aug): +2.1°F
- Winter lows (Dec–Feb): +5.3°F
- Precipitation: −5%
- Wettest day of the year: +4%
- Longest dry spell: −2 days
- Days above 90°F: +1 days
- Nights above 70°F: +7 days
- Freezing nights: −21 days
- Frost-free season: +28 days
- Muggy days: +11 days
- Summer heat index (Jun–Aug): +2.8°F
- Extreme fire-weather days: +8 days
- Snowfall: +36%
- Snowy days (1 inch or more): +0 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.