West Haven Connecticut Climate Data

Monthly Average Climate Data for West Haven Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.1 °F38.5 °F3.74 in.
February24.4 °F40.4 °F3.1 in.
March31.2 °F47.2 °F4.4 in.
April40.9 °F57.9 °F4.21 in.
May50.7 °F67.9 °F3.85 in.
June60.3 °F76.9 °F4.16 in.
July66.4 °F82.8 °F3.47 in.
August65.1 °F81.2 °F3.97 in.
September58.1 °F75.4 °F4.32 in.
October46.7 °F64.1 °F4.79 in.
November36.9 °F53.3 °F3.79 in.
December29.0 °F43.6 °F4.37 in.
Annual44.4 °F60.8 °F48.17 in.

Climate Data for West Haven Connecticut

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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