Sterling Connecticut Climate Data

Monthly Average Climate Data for Sterling Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.4 °C2.6 °C98.81 mm
February-6.7 °C3.9 °C86.36 mm
March-2.7 °C8.2 °C120.14 mm
April2.7 °C14.8 °C115.06 mm
May8.3 °C20.7 °C88.14 mm
June13.4 °C25.2 °C101.85 mm
July16.9 °C28.2 °C91.44 mm
August15.9 °C27.1 °C107.7 mm
September11.9 °C23.2 °C110.24 mm
October5.8 °C16.9 °C125.22 mm
November0.3 °C11 °C103.63 mm
December-4.2 °C5.4 °C121.92 mm
Annual4.5 °C15.6 °C1270.51 mm

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 : -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