Charleston Maine Climate Data

Monthly Average Climate Data for Charleston Maine

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-14.4 °C-3.2 °C84.33 mm
February-13.6 °C-1.3 °C69.85 mm
March-7.6 °C3.8 °C84.84 mm
April-0.9 °C11 °C95.5 mm
May5.2 °C18.2 °C92.46 mm
June10.6 °C23 °C112.01 mm
July13.8 °C26.1 °C90.42 mm
August12.8 °C25.5 °C90.68 mm
September8.3 °C21.1 °C93.98 mm
October2.4 °C13.7 °C123.19 mm
November-2.7 °C6.7 °C101.85 mm
December-9.2 °C0.3 °C102.11 mm
Annual0.4 °C12.1 °C1141.22 mm

Climate Data for Charleston Maine

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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