Worcester County Climate
Worcester County, Massachusetts
Avg Annual Temp
47.6°F
Annual Precip
48.4"
Annual Snowfall
57.1"
Extreme Heat Days
7.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Worcester County Weather
Worcester's Cold Continental Climate
Worcester County is the coolest in this set, with an average annual temperature of 47.6°F. Its higher elevation and inland location place it significantly below the national temperature median.
Well Below the State Average
The county's 47.6°F average is nearly two degrees cooler than the 49.5°F Massachusetts state average. It acts as a cold pocket for the state, frequently recording the earliest frosts and latest thaws.
The Snowiest Neighbor
Worcester averages 57.1 inches of snow, the highest among its eastern neighbors. It is significantly cooler and snowier than neighboring Suffolk, which averages 51.5°F and only 49.2 inches of snow.
Mild Summers and Harsh Winters
Winters are biting with a 26.3°F average and January lows of 23.7°F. Summers are relatively mild, with July averaging 70.8°F and only 8 days of extreme heat reaching 90°F.
Winterize for the Long Haul
Superior home insulation and reliable heating systems are essential to handle the 26.3°F winter average. Residents should prioritize high-quality winter tires and snowblowers to manage the 57.1 inches of annual snow.
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.