Boothbay Harbor Maine Climate Data

Monthly Average Climate Data for Boothbay Harbor Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.0 °F31.6 °F4.14 in.
February19.2 °F34.0 °F3.88 in.
March25.8 °F40.7 °F4.72 in.
April35.0 °F51.4 °F4.48 in.
May44.7 °F61.6 °F3.69 in.
June53.7 °F70.3 °F4.5 in.
July59.7 °F76.3 °F3.66 in.
August59.2 °F76.1 °F3.16 in.
September52.6 °F69.3 °F4.05 in.
October43.7 °F57.9 °F5.35 in.
November34.9 °F47.6 °F4.52 in.
December24.9 °F37.6 °F4.97 in.
Annual39.3 °F54.5 °F51.12 in.

Climate Data for Boothbay 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 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year