Bristol County Climate
Bristol County, Massachusetts
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.8°F
Annual Precip
49.4"
Annual Snowfall
35.9"
Extreme Heat Days
11
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
2,833
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Bristol County
Climate Verdict
Bristol County has a mild, with an average annual temperature of 50.8°F, moderately wet with 49.4 inches of annual precipitation, rare extreme heat with only 11.3 days above 90°F annually, moderate snowfall of 35.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.0°F. summers are warm — July averages 73.1°F. The 44°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Bristol County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Bristol County closely matches the Massachusetts statewide average temperature of 49.5°F, it is somewhat wetter than average for Massachusetts.
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 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.