Blue Hills Connecticut Climate Data

Monthly Average Climate Data for Blue Hills Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.0 °F35.9 °F3.72 in.
February20.3 °F38.6 °F3.28 in.
March28.1 °F46.7 °F4.35 in.
April38.7 °F59.5 °F4.2 in.
May49.1 °F70.4 °F3.85 in.
June58.3 °F78.9 °F4.78 in.
July63.8 °F84.3 °F4.27 in.
August62.1 °F82.6 °F4.38 in.
September54.6 °F75.4 °F4.76 in.
October43.1 °F63.2 °F5.48 in.
November33.3 °F51.6 °F4.06 in.
December25.2 °F41.2 °F4.67 in.
Annual41.3 °F60.7 °F51.8 in.

Climate Data for Blue Hills Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
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