Sullivan Maine Climate Data

Monthly Average Climate Data for Sullivan Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.4 °F29.6 °F4.29 in.
February15.5 °F32.1 °F3.62 in.
March22.2 °F39.5 °F4.44 in.
April32.3 °F51.4 °F4.32 in.
May42.4 °F62.5 °F4.1 in.
June51.3 °F71.5 °F3.99 in.
July57.5 °F77.3 °F3.24 in.
August56.6 °F76.9 °F2.95 in.
September49.5 °F69.7 °F3.93 in.
October40.3 °F57.6 °F5.46 in.
November31.7 °F46.1 °F5.12 in.
December21.4 °F35.7 °F5.2 in.
Annual36.3 °F54.2 °F50.66 in.

Climate Data for Sullivan 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 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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