Hampden County Climate
Hampden County, Massachusetts
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
49.0°F
Annual Precip
48.8"
Annual Snowfall
—
Extreme Heat Days
16
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
2,751
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hampden County
Climate Verdict
Hampden County has a cool, averaging 49.0°F annually, moderately wet with 48.8 inches of annual precipitation, rare extreme heat with only 15.899999999999999 days above 90°F annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 24.9°F. summers are warm — July averages 72.6°F. The 48°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Hampden County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Hampden County closely matches the Massachusetts statewide average temperature of 49.5°F.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.