Climate change in Perry County, Pennsylvania
Since 1979, Perry County, Pennsylvania has warmed 2.8°F, with 5 more days above 90°F, 4 more nights above 70°F and 10% more precipitation a year. Its climate in 1996–2025 is most like Monmouth County, NJ's was in 1951–1980.
- Average temperature: +2.8°F
- Summer highs (Jun–Aug): +2.3°F
- Winter lows (Dec–Feb): +3.6°F
- Precipitation: +10%
- Wettest day of the year: +36%
- Longest dry spell: −2 days
- Days above 90°F: +5 days
- Nights above 70°F: +4 days
- Freezing nights: −7 days
- Frost-free season: +11 days
- Muggy days: +10 days
- Summer heat index (Jun–Aug): +3.0°F
- Extreme fire-weather days: +9 days
- Snowfall: −20%
- 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.