Norfolk County Climate
Norfolk County, Massachusetts
Avg Annual Temp
50.7°F
Annual Precip
49.5"
Annual Snowfall
56.2"
Extreme Heat Days
13.875
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Norfolk County Weather
Moderate Temperatures in Norfolk
Norfolk County averages 50.7°F, sitting just above the state average but below the national median. This climate provides a classic New England experience with high precipitation and clear seasonal shifts.
Warmer and Wetter Than Average
The county's 50.7°F annual average is more than a degree warmer than the 49.5°F state baseline. It is also wetter than the state average, receiving 49.5 inches of precipitation annually.
Matching the Coastal Suburbs
Norfolk shares a 50.7°F annual average with neighboring Plymouth County, though it sees more snow. Its 56.2 inches of annual snowfall far exceeds Plymouth's 38.8 inches, despite their similar temperatures.
High Humidity and Winter Snow
Summers are warm with a July average of 73.2°F and 14 days of extreme heat over 90°F. Winters are cold and snowy, with average temperatures dropping to 30.7°F from December through February.
Handling the Heat and Snow
With 14 days of extreme heat and 56.2 inches of snow, residents need both reliable air conditioning and heavy-duty winter gear. Proper drainage planning is also advised to manage the nearly 50 inches of annual rainfall.
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.