Casco Maine Climate Data

Monthly Average Climate Data for Casco Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.7 °F29.1 °F3.32 in.
February10.9 °F32.1 °F3.38 in.
March20.8 °F40.7 °F3.87 in.
April32.2 °F53.6 °F4.41 in.
May43.3 °F65.8 °F3.79 in.
June53.5 °F74.0 °F4.9 in.
July59.1 °F79.8 °F4.19 in.
August57.4 °F78.7 °F3.81 in.
September49.6 °F71.0 °F3.96 in.
October38.0 °F57.8 °F5.57 in.
November28.1 °F45.6 °F4.32 in.
December17.6 °F34.9 °F4.41 in.
Annual35 °F55.3 °F49.93 in.

Climate Data for Casco Maine

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfc - Subarctic With Cool Summers And Year Around Rainfall
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