Currently: 72 °F. Mostly cloudy. (Weather station: Westerly State Airport, USA). See more current weatherAnnual Weather Averages in Groton / New London Airport
Groton / New London Airport is 21 miles from Westbrook, so the actual climate in Westbrook can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Westbrook
High Temp: 79 °F
Low Temp: 23 °F
Mean Temp: 51 °F
Precipitation: 3.31"
Humidity: 72%
Dew Point: 43 °F
Wind: 14 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Westbrook
High Temp: 38 °F
Low Temp: 23 °F
Mean Temp: 31 °F
Precipitation: 2.85"
Humidity: 67%
Dew Point: 21 °F
Wind: 17 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Westbrook
High Temp: 40 °F
Low Temp: 24 °F
Mean Temp: 32 °F
Precipitation: 2.55"
Humidity: 67%
Dew Point: 22 °F
Wind: 17 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Westbrook
High Temp: 46 °F
Low Temp: 30 °F
Mean Temp: 38 °F
Precipitation: 3.81"
Humidity: 67%
Dew Point: 27 °F
Wind: 17 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Westbrook
High Temp: 56 °F
Low Temp: 39 °F
Mean Temp: 47 °F
Precipitation: 3.62"
Humidity: 68%
Dew Point: 37 °F
Wind: 16 mph
Pressure: 29.99 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Westbrook
High Temp: 65 °F
Low Temp: 48 °F
Mean Temp: 56 °F
Precipitation: 3.44"
Humidity: 74%
Dew Point: 48 °F
Wind: 13 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Westbrook
High Temp: 74 °F
Low Temp: 58 °F
Mean Temp: 66 °F
Precipitation: 3.23"
Humidity: 78%
Dew Point: 58 °F
Wind: 11 mph
Pressure: 29.95 "Hg
Visibility: 8 mi
July Climate & Weather Averages in Westbrook
High Temp: 79 °F
Low Temp: 64 °F
Mean Temp: 72 °F
Precipitation: 2.89"
Humidity: 79%
Dew Point: 65 °F
Wind: 11 mph
Pressure: 29.96 "Hg
Visibility: 8 mi
August Climate & Weather Averages in Westbrook
High Temp: 79 °F
Low Temp: 64 °F
Mean Temp: 71 °F
Precipitation: 3.09"
Humidity: 79%
Dew Point: 64 °F
Wind: 11 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Westbrook
High Temp: 73 °F
Low Temp: 57 °F
Mean Temp: 65 °F
Precipitation: 3.87"
Humidity: 78%
Dew Point: 58 °F
Wind: 13 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Westbrook
High Temp: 63 °F
Low Temp: 45 °F
Mean Temp: 54 °F
Precipitation: 3.79"
Humidity: 75%
Dew Point: 47 °F
Wind: 15 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Westbrook
High Temp: 53 °F
Low Temp: 36 °F
Mean Temp: 44 °F
Precipitation: 3.15"
Humidity: 70%
Dew Point: 35 °F
Wind: 16 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Westbrook
High Temp: 44 °F
Low Temp: 28 °F
Mean Temp: 36 °F
Precipitation: 3.45"
Humidity: 69%
Dew Point: 27 °F
Wind: 16 mph
Pressure: 30.07 "Hg
Visibility: 9 mi