Collinsville Connecticut Climate Data

Monthly Average Climate Data for Collinsville Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.1 °C1.8 °C93.22 mm
February-7.4 °C3.6 °C84.58 mm
March-3.2 °C8.1 °C106.93 mm
April2.6 °C15.3 °C102.36 mm
May8.4 °C21.4 °C104.14 mm
June13.7 °C26.1 °C120.14 mm
July16.6 °C29 °C119.38 mm
August15.6 °C27.8 °C122.17 mm
September11.5 °C23.9 °C126.75 mm
October5.2 °C17.1 °C142.75 mm
November-0.2 °C10.7 °C101.09 mm
December-4.6 °C4.8 °C117.6 mm
Annual4.2 °C15.8 °C1341.11 mm

Climate Data for Collinsville Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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