Bristol County Climate
Bristol County, Massachusetts
Avg Annual Temp
50.8°F
Annual Precip
49.4"
Annual Snowfall
35.9"
Extreme Heat Days
11.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Bristol County Weather
Bristol’s Warm Coastal Influence
Bristol County averages 50.8°F annually, which is slightly below the national median but higher than the 49.5°F state average. Its climate is characterized by warm summers and relatively wet conditions.
Above the State Average
This county ranks as one of the warmer regions in Massachusetts, consistently outperforming the state's average annual temperature. Its proximity to the coast keeps it over 4 degrees warmer than Berkshire County on average.
Regional Heat Comparisons
Bristol’s 50.8°F average is identical to Barnstable, though it experiences 11 extreme heat days compared to Barnstable’s one. It also receives 49.4 inches of precipitation, making it wetter than its neighbors to the east.
Scorching Summers and Steady Snow
July averages a warm 73.1°F, contributing to 11 days of extreme heat over 90°F annually. Winters bring 35.9 inches of snow and a January average of 29.0°F.
Preparing for Weather Extremes
Homeowners should invest in efficient air conditioning to handle the double-digit extreme heat days. With 49.4 inches of rain and significant snowfall, robust drainage and winter maintenance are high priorities.
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.