Norfolk County Climate
Norfolk County, Massachusetts
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.7°F
Annual Precip
49.5"
Annual Snowfall
56.2"
Extreme Heat Days
14
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
2,878
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Norfolk County
Climate Verdict
Norfolk County has a mild, with an average annual temperature of 50.7°F, moderately wet with 49.5 inches of annual precipitation, rare extreme heat with only 13.875 days above 90°F annually, moderate snowfall of 56.2 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 28.1°F. summers are warm — July averages 73.2°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Norfolk County closely matches the Massachusetts statewide average temperature of 49.5°F, it is somewhat wetter than average for Massachusetts.
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 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.