Killingworth Connecticut Climate Data

Monthly Average Climate Data for Killingworth Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.8 °F36.7 °F3.99 in.
February21.9 °F39.1 °F3.43 in.
March29.0 °F46.6 °F4.78 in.
April38.8 °F58.6 °F4.57 in.
May48.2 °F68.5 °F3.9 in.
June57.7 °F77.5 °F4.57 in.
July63.6 °F82.7 °F3.74 in.
August62.2 °F81.3 °F4.25 in.
September54.9 °F74.2 °F4.46 in.
October43.6 °F62.9 °F5.15 in.
November34.3 °F52.0 °F4.11 in.
December26.7 °F42.2 °F4.68 in.
Annual41.8 °F60.2 °F51.63 in.

Climate Data for Killingworth Connecticut

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
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 ClassificationDfb - Humid Continental Mild Summer, Wet All Year