Connecticut Climate Data
NOAA 30-year climate normals for all 9 counties.
State Avg Temp
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All Connecticut Counties
Capitol Planning Region
Data pending
Greater Bridgeport Planning Region
Data pending
Lower Connecticut River Valley Planning Region
Data pending
Naugatuck Valley Planning Region
Data pending
Northeastern Connecticut Planning Region
Data pending
Northwest Hills Planning Region
Data pending
South Central Connecticut Planning Region
Data pending
Southeastern Connecticut Planning Region
Data pending
Western Connecticut Planning Region
Data pending
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.