Brunswick Maine Climate Data

Monthly Average Climate Data for Brunswick Maine

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.7 °C-0.7 °C94.49 mm
February-10.6 °C0.9 °C89.92 mm
March-5.1 °C5.1 °C106.17 mm
April0.6 °C11.7 °C113.03 mm
May6.3 °C17.8 °C92.2 mm
June11.6 °C22.7 °C121.41 mm
July14.9 °C26.1 °C92.71 mm
August14.2 °C25.7 °C87.38 mm
September10.1 °C21.6 °C102.36 mm
October4.1 °C14.8 °C138.18 mm
November-1.3 °C8.4 °C115.32 mm
December-7.2 °C2.6 °C119.13 mm
Annual2.2 °C13.1 °C1272.3 mm

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