Westbrook Maine Climate Data

Monthly Average Climate Data for Westbrook Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.9 °F31.6 °F3.54 in.
February14.4 °F34.6 °F3.53 in.
March23.7 °F42.3 °F4.15 in.
April34.4 °F53.8 °F4.61 in.
May44.8 °F65.1 °F3.63 in.
June54.9 °F74.2 °F4.32 in.
July60.8 °F79.9 °F3.65 in.
August59.3 °F79.1 °F3.45 in.
September51.6 °F71.7 °F3.88 in.
October40.3 °F59.6 °F5.66 in.
November30.4 °F47.8 °F4.32 in.
December20.2 °F37.3 °F4.77 in.
Annual37.3 °F56.4 °F49.51 in.

Climate Data for Westbrook Maine

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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