Sterling Connecticut Climate Data

Monthly Average Climate Data for Sterling Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.7 °F36.6 °F3.89 in.
February20.0 °F39.1 °F3.4 in.
March27.1 °F46.7 °F4.73 in.
April36.9 °F58.6 °F4.53 in.
May47.0 °F69.2 °F3.47 in.
June56.1 °F77.3 °F4.01 in.
July62.5 °F82.7 °F3.6 in.
August60.7 °F80.8 °F4.24 in.
September53.5 °F73.8 °F4.34 in.
October42.5 °F62.4 °F4.93 in.
November32.6 °F51.8 °F4.08 in.
December24.5 °F41.8 °F4.8 in.
Annual40.2 °F60.1 °F50.02 in.

Climate Data for Sterling 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