Northeast Harbor Maine Climate Data

Monthly Average Climate Data for Northeast Harbor Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.0 °F31.4 °F4.67 in.
February19.7 °F32.9 °F3.89 in.
March25.4 °F39.3 °F4.8 in.
April34.5 °F49.9 °F4.56 in.
May43.5 °F60.4 °F4.43 in.
June52.0 °F69.7 °F4.25 in.
July58.0 °F75.5 °F3.24 in.
August57.7 °F75.1 °F3.05 in.
September51.9 °F68.0 °F4.12 in.
October43.8 °F57.0 °F5.71 in.
November35.1 °F46.8 °F5.63 in.
December25.5 °F37.4 °F5.6 in.
Annual38.8 °F53.6 °F53.95 in.

Climate Data for Northeast Harbor Maine

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 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