Rocky Hill Connecticut Climate Data

Monthly Average Climate Data for Rocky Hill Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.4 °F36.2 °F3.77 in.
February20.6 °F38.9 °F3.25 in.
March28.2 °F46.8 °F4.37 in.
April38.4 °F59.4 °F4.19 in.
May48.5 °F70.1 °F3.73 in.
June57.9 °F78.6 °F4.77 in.
July63.4 °F84.0 °F4.15 in.
August61.8 °F82.3 °F4.04 in.
September54.4 °F75.1 °F4.34 in.
October43.0 °F63.0 °F4.94 in.
November33.3 °F51.7 °F3.8 in.
December25.3 °F41.6 °F4.39 in.
Annual41.2 °F60.6 °F49.74 in.

Climate Data for Rocky Hill Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°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