Sumner Maine Climate Data

Monthly Average Climate Data for Sumner Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.8 °F27.3 °F3.35 in.
February9.9 °F30.3 °F2.99 in.
March19.8 °F39.0 °F3.54 in.
April31.6 °F52.0 °F4.19 in.
May42.7 °F64.9 °F3.85 in.
June52.2 °F73.3 °F5.05 in.
July57.6 °F78.7 °F3.99 in.
August55.8 °F77.7 °F4.09 in.
September47.8 °F70.3 °F3.51 in.
October37.2 °F57.1 °F5.5 in.
November27.5 °F44.5 °F4.17 in.
December17.2 °F33.3 °F4.23 in.
Annual34 °F54 °F48.46 in.

Climate Data for Sumner 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 : -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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