Andover Connecticut Climate Data

Monthly Average Climate Data for Andover Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8 °C2.2 °C90.93 mm
February-7.2 °C3.6 °C78.74 mm
March-3 °C7.9 °C110.49 mm
April2.6 °C14.6 °C108.97 mm
May8 °C20.4 °C92.2 mm
June13.2 °C25.1 °C109.47 mm
July16.4 °C27.9 °C102.11 mm
August15.4 °C27.1 °C111 mm
September11.2 °C23.3 °C114.3 mm
October4.9 °C16.8 °C122.94 mm
November-0.2 °C10.8 °C98.3 mm
December-4.6 °C5.3 °C112.01 mm
Annual4.1 °C15.4 °C1251.46 mm

Climate Data for Andover Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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