Adams County Climate
Adams County, Pennsylvania
Avg Annual Temp
52.7°F
Annual Precip
44.6"
Annual Snowfall
27.6"
Extreme Heat Days
19.933333333333337
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Adams County Weather
A mild climate near the national median
Adams County maintains an annual average temperature of 52.7°F, sitting just below the national median for the lower 48 states. This humid continental climate experiences distinct seasons with moderate shifts throughout the year. The county receives 44.6 inches of precipitation annually, aligning closely with typical mid-Atlantic weather patterns.
Among Pennsylvania's warmest agricultural hubs
The county's 52.7°F average temperature makes it significantly warmer than the Pennsylvania state average of 49.9°F. This warmth supports its famous orchards and agricultural economy more effectively than cooler northern counties. It ranks among the warmer regions in the Commonwealth, benefiting from its position in the southern tier.
A warmer neighbor in South Central PA
Adams County runs warmer than its northern neighbor, Cumberland County, while sharing similar precipitation levels. Its July average of 74.8°F reflects a slightly higher heat index than more mountainous counties to the west. This relative warmth contributes to more consistent growing seasons compared to neighbors in higher elevations.
Hot summers and manageable winters
Summers are distinctively warm with 20 days per year exceeding 90°F and a July average of 74.8°F. Winters stay relatively mild with 27.6 inches of annual snowfall and a January average of 30.1°F. This balance results in a winter average temperature of 32.5°F, which is notably higher than the state's colder northern tier.
Prepare for humidity and moderate snow
Homeowners should invest in efficient cooling systems to manage the three weeks of extreme heat each summer. While snowfall averages 27.6 inches, significant single-storm events are common, requiring reliable clearing equipment. Seasonal maintenance on HVAC systems ensures comfort during the high-humidity peaks of July.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.