Climate change in Hunterdon County, New Jersey
Since 1979, Hunterdon County, New Jersey has warmed 3.2°F, with 6 more days above 90°F, 4 more nights above 70°F and 4% more precipitation a year. Its climate in 1996–2025 is most like Mercer County, NJ's was in 1951–1980.
- Average temperature: +3.2°F
- Summer highs (Jun–Aug): +2.4°F
- Winter lows (Dec–Feb): +4.7°F
- Precipitation: +4%
- Wettest day of the year: +14%
- Longest dry spell: +0 days
- Days above 90°F: +6 days
- Nights above 70°F: +4 days
- Freezing nights: −18 days
- Frost-free season: +28 days
- Muggy days: +13 days
- Summer heat index (Jun–Aug): +3.1°F
- Extreme fire-weather days: +13 days
- Snowfall: −19%
- 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.