Climate change in Essex County, Massachusetts
Since 1979, Essex County, Massachusetts has warmed 2.9°F, with 4 more days above 90°F, 4 more nights above 70°F and 1% more precipitation a year. Its climate in 1996–2025 is most like Bristol County, MA's was in 1951–1980.
- Average temperature: +2.9°F
- Summer highs (Jun–Aug): +1.6°F
- Winter lows (Dec–Feb): +4.5°F
- Precipitation: +1%
- Wettest day of the year: −6%
- Longest dry spell: −1 days
- Days above 90°F: +4 days
- Nights above 70°F: +4 days
- Freezing nights: −15 days
- Frost-free season: +20 days
- Muggy days: +14 days
- Summer heat index (Jun–Aug): +2.1°F
- Extreme fire-weather days: +13 days
- Snowfall: +21%
- 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.