Beaver County Climate
Beaver County, Pennsylvania
Avg Annual Temp
50.5°F
Annual Precip
40.5"
Annual Snowfall
—
Extreme Heat Days
9.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Beaver County Weather
Temperate weather on the western border
Beaver County averages 50.5°F annually, sitting about three degrees below the national median. Its 40.5 inches of precipitation is relatively moderate compared to the more humid eastern parts of the state. This creates a climate that is representative of the Upper Ohio Valley, with distinct but not overly extreme seasons.
A drier corner of the Commonwealth
Beaver County is slightly warmer than the Pennsylvania average of 49.9°F, but it is much drier. It receives nearly 5 inches less annual precipitation than the state average of 45.3 inches. This relative lack of moisture makes it one of the less humid counties in the Western Pennsylvania region.
Lower extreme heat than its neighbors
Beaver County experiences only 9 days of extreme heat above 90°F, which is significantly fewer than the 15-17 days seen in neighboring Allegheny and Armstrong counties. While its average temperature is 50.5°F, it avoids the urban heat intensities found closer to Pittsburgh. Precipitation remains consistent with other counties along the Ohio River corridor.
Cool summers and frozen winters
The county enjoys a July average of 71.9°F, keeping summer peaks more manageable than in the southern part of the state. Winters average 30.0°F from December through February, with January being the coldest month at 27.8°F. Snowfall data is currently unavailable, but the winter temps suggest consistent frost throughout the season.
Focus on winter heating efficiency
Residents can enjoy summers with fewer extreme heat days, but reliable heating is vital for the 27.8°F January lows. Since the area is drier than the state average, drought-resistant landscaping can help manage the 40.5 inches of annual rain. Prepare for frozen ground in winter despite the lack of specific snowfall records.
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.