Fairfield Connecticut Climate Data

Monthly Average Climate Data for Fairfield Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.7 °F38.3 °F3.81 in.
February23.9 °F40.3 °F3.06 in.
March30.8 °F47.4 °F4.29 in.
April40.6 °F58.8 °F4.12 in.
May50.3 °F68.4 °F3.91 in.
June59.9 °F77.8 °F4.83 in.
July66.0 °F83.3 °F3.56 in.
August65.0 °F81.6 °F4.32 in.
September57.8 °F75.5 °F4.65 in.
October46.8 °F64.2 °F4.63 in.
November36.8 °F53.4 °F4.06 in.
December28.9 °F43.4 °F4.47 in.
Annual44.1 °F61 °F49.71 in.

Climate Data for Fairfield 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 7a : 0°F to 5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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