Belfast Maine Climate Data

Monthly Average Climate Data for Belfast Maine

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.5 °C-1.3 °C101.09 mm
February-10.7 °C0.3 °C82.55 mm
March-5.8 °C4.4 °C98.3 mm
April0.3 °C11.1 °C112.27 mm
May5.9 °C17.4 °C97.03 mm
June11.2 °C22.3 °C109.98 mm
July14.4 °C25.5 °C79.76 mm
August13.9 °C25.2 °C82.55 mm
September9.7 °C21.2 °C100.33 mm
October4 °C14.4 °C139.45 mm
November-1.2 °C7.9 °C118.36 mm
December-7.2 °C2 °C116.59 mm
Annual1.9 °C12.5 °C1238.26 mm

Climate Data for Belfast 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 : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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