Deer Isle Maine Climate Data

Monthly Average Climate Data for Deer Isle Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.1 °F32.0 °F4.2 in.
February18.5 °F33.4 °F3.57 in.
March25.5 °F39.7 °F4.37 in.
April34.8 °F49.8 °F4.51 in.
May43.5 °F59.7 °F3.86 in.
June52.1 °F68.1 °F4.21 in.
July58.0 °F74.2 °F3.25 in.
August57.8 °F74.1 °F3.15 in.
September52.2 °F67.8 °F4.09 in.
October42.9 °F57.1 °F5.43 in.
November34.1 °F47.1 °F4.87 in.
December24.3 °F38.0 °F4.94 in.
Annual38.4 °F53.4 °F50.45 in.

Climate Data for Deer Isle 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 6a : -10°F to -5°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