Collinsville Connecticut Climate Data

Monthly Average Climate Data for Collinsville Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.5 °F35.3 °F3.67 in.
February18.7 °F38.4 °F3.33 in.
March26.2 °F46.5 °F4.21 in.
April36.6 °F59.6 °F4.03 in.
May47.2 °F70.5 °F4.1 in.
June56.6 °F79.0 °F4.73 in.
July61.9 °F84.2 °F4.7 in.
August60.1 °F82.1 °F4.81 in.
September52.7 °F75.0 °F4.99 in.
October41.3 °F62.7 °F5.62 in.
November31.7 °F51.2 °F3.98 in.
December23.8 °F40.6 °F4.63 in.
Annual39.5 °F60.4 °F52.8 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation