Winter Harbor Maine Climate Data

Monthly Average Climate Data for Winter Harbor Maine

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.8 °C-0.2 °C116.33 mm
February-7.3 °C0.5 °C97.03 mm
March-3.8 °C3.9 °C119.63 mm
April1.5 °C9.6 °C112.78 mm
May6.2 °C15.3 °C110.24 mm
June10.7 °C20.4 °C104.9 mm
July13.8 °C23.6 °C81.53 mm
August14.1 °C23.4 °C75.18 mm
September11.3 °C19.6 °C103.12 mm
October6.4 °C13.7 °C143.26 mm
November1.6 °C8.2 °C138.68 mm
December-4 °C3.2 °C140.46 mm
Annual3.6 °C11.8 °C1343.14 mm

Climate Data for Winter Harbor Maine

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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