Hampden County Climate
Hampden County, Massachusetts
Avg Annual Temp
49.0°F
Annual Precip
48.8"
Annual Snowfall
—
Extreme Heat Days
15.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Hampden County Weather
Pioneer Valley Warmth Trends
Hampden County averages 49.0°F annually, staying just below the state average and the national median. Its location in the Connecticut River Valley creates a distinct microclimate for the region.
Near the State Norm
Hampden’s average temperature is nearly identical to the state average of 49.5°F. It is significantly warmer than neighboring Hampshire County, which averages 47.1°F.
The Heat of the Valley
Hampden experiences 16 days of extreme heat over 90°F, more than any other county in this group. This is 11 more heat days than Berkshire County and 6 more than Franklin County.
Hot Summers and Cold Januaries
July reaches an average of 72.6°F, though the county also faces a chilly January average of 24.9°F. While specific annual snowfall data is currently unavailable, the winter average sits at a brisk 27.5°F.
Cooling is a Priority
Residents should invest in high-capacity air conditioning to manage the 16 days of extreme heat. Although specific snow data is missing, the 48.8 inches of annual rain suggest a need for robust storm management.
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.