Winterport Maine Climate Data

Monthly Average Climate Data for Winterport Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.8 °F28.6 °F3.96 in.
February10.5 °F31.5 °F3.35 in.
March21.1 °F39.6 °F4.28 in.
April31.8 °F52.1 °F4.36 in.
May42.1 °F64.3 °F3.78 in.
June51.2 °F73.2 °F4.02 in.
July57.7 °F79.0 °F3.27 in.
August56.0 °F78.1 °F3.35 in.
September48.4 °F70.4 °F3.83 in.
October37.7 °F57.8 °F4.95 in.
November28.7 °F45.8 °F4.35 in.
December17.3 °F34.7 °F4.89 in.
Annual34.3 °F54.6 °F48.39 in.

Climate Data for Winterport 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 5a : -20°F to -15°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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