Winthrop Maine Climate Data

Monthly Average Climate Data for Winthrop Maine

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.3 °C-1.7 °C91.44 mm
February-11.4 °C-0.1 °C77.98 mm
March-5.8 °C4.6 °C92.71 mm
April0.4 °C11.7 °C106.43 mm
May6.4 °C18.3 °C90.17 mm
June11.7 °C23.2 °C115.32 mm
July14.9 °C26.3 °C91.19 mm
August14.1 °C25.8 °C90.42 mm
September9.8 °C21.7 °C95.76 mm
October3.7 °C14.6 °C135.64 mm
November-1.7 °C7.8 °C108.46 mm
December-7.7 °C1.7 °C109.22 mm
Annual1.8 °C12.8 °C1204.74 mm

Climate Data for Winthrop Maine

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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