Derby Connecticut Climate Data

Monthly Average Climate Data for Derby Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.6 °F37.3 °F3.82 in.
February21.9 °F39.5 °F3.39 in.
March29.3 °F46.8 °F4.6 in.
April39.4 °F58.3 °F4.3 in.
May49.5 °F69.5 °F4.12 in.
June58.9 °F77.8 °F4.49 in.
July64.6 °F83.7 °F3.82 in.
August63.0 °F81.9 °F4.1 in.
September55.9 °F75.8 °F4.89 in.
October44.0 °F64.1 °F4.88 in.
November34.3 °F52.6 °F4.13 in.
December26.4 °F42.5 °F4.44 in.
Annual42.3 °F60.8 °F50.98 in.

Climate Data for Derby Connecticut

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation