Columbia Connecticut Climate Data

Monthly Average Climate Data for Columbia Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.8 °C1.9 °C96.27 mm
February-7.2 °C3.3 °C82.8 mm
March-3.1 °C7.6 °C115.06 mm
April2.4 °C14.3 °C112.27 mm
May7.7 °C20.1 °C92.2 mm
June12.9 °C24.7 °C108.97 mm
July16.1 °C27.6 °C101.09 mm
August15.2 °C26.7 °C109.73 mm
September11.3 °C22.9 °C113.79 mm
October5.2 °C16.5 °C125.22 mm
November0 °C10.6 °C102.11 mm
December-4.2 °C5.1 °C116.84 mm
Annual4 °C15.1 °C1276.35 mm

Climate Data for Columbia 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2024 plantmaps.com