Franklin County Climate
Franklin County, Pennsylvania
Avg Annual Temp
51.5°F
Annual Precip
46.0"
Annual Snowfall
31.9"
Extreme Heat Days
10.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Franklin County Weather
Approaching National Medians
With an annual average of 51.5°F, Franklin County sits closer to the national median than many of its northern neighbors. This reflects a transition toward the warmer humid subtropical influences of the south.
One of the State's Warmest
Franklin is one of Pennsylvania's warmer counties, exceeding the state average of 49.9°F by 1.6 degrees. Its 46.0 inches of precipitation remains very close to the state-wide norms.
Regional Heat Leader
Franklin shares its 51.5°F average with Greene County, making them some of the warmest spots in the region. It stays much milder than Jefferson, which is nearly 4 degrees colder on average.
Warm Summers and Light Snow
Summers are notably warm with 11 days exceeding 90°F and a July average of 72.9°F. Winters are relatively light, seeing only 31.9 inches of snow compared to the state's northern averages.
Cooling for Humid Summers
Prioritize energy-efficient air conditioning to manage the double-digit extreme heat days. Standard winter kits suffice for the moderate snowfall, but residents should prepare for high summer humidity.
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.