Dauphin County Climate
Dauphin County, Pennsylvania
Avg Annual Temp
52.3°F
Annual Precip
46.8"
Annual Snowfall
27.1"
Extreme Heat Days
18.133333333333336
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Dauphin County Weather
Temperate valley weather patterns
Dauphin County averages 52.3°F annually, aligning it with the warmer half of the continental United States. It features a humid subtropical influence that brings hot summers and variable winters.
Warmer than the state median
Dauphin’s average temperature is over two degrees higher than the Pennsylvania state average of 49.9°F. It ranks as one of the warmer urban corridors in the Commonwealth.
Similar to its valley peers
Dauphin mirrors Cumberland County’s 52.3°F average, though it receives slightly more precipitation at 46.8 inches. It is significantly warmer and less snowy than Columbia County to its north.
Significant heat and light snow
Summers are hot with 18 extreme heat days and a July average of 74.7°F. Winters are relatively light on snow, averaging only 27.1 inches per year.
Ready for summer humidity
High summer temperatures and 46.8 inches of annual rain create humid conditions that require reliable HVAC systems. Residents enjoy a shorter, milder winter season compared to northern Pennsylvania.
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.