Andover Connecticut Climate Data

Monthly Average Climate Data for Andover Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.6 °F35.9 °F3.58 in.
February19.0 °F38.5 °F3.1 in.
March26.6 °F46.2 °F4.35 in.
April36.6 °F58.3 °F4.29 in.
May46.4 °F68.7 °F3.63 in.
June55.7 °F77.1 °F4.31 in.
July61.5 °F82.2 °F4.02 in.
August59.7 °F80.7 °F4.37 in.
September52.1 °F74.0 °F4.5 in.
October40.9 °F62.3 °F4.84 in.
November31.6 °F51.4 °F3.87 in.
December23.8 °F41.5 °F4.41 in.
Annual39.3 °F59.7 °F49.27 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year