Hartland Connecticut Climate Data

Monthly Average Climate Data for Hartland Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.6 °F34.0 °F3.67 in.
February16.9 °F37.0 °F3.19 in.
March25.1 °F45.2 °F3.91 in.
April35.8 °F58.6 °F3.7 in.
May46.2 °F69.7 °F4.24 in.
June55.7 °F78.0 °F4.84 in.
July60.8 °F83.0 °F4.59 in.
August58.9 °F81.2 °F4.16 in.
September51.5 °F74.0 °F4.95 in.
October40.3 °F61.8 °F5.18 in.
November30.8 °F49.9 °F3.82 in.
December22.5 °F39.2 °F4.22 in.
Annual38.3 °F59.3 °F50.47 in.

Climate Data for Hartland Connecticut

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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