Fairfield Connecticut Climate Data

Monthly Average Climate Data for Fairfield Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.2 °C3.5 °C96.77 mm
February-4.5 °C4.6 °C77.72 mm
March-0.7 °C8.6 °C108.97 mm
April4.8 °C14.9 °C104.65 mm
May10.2 °C20.2 °C99.31 mm
June15.5 °C25.4 °C122.68 mm
July18.9 °C28.5 °C90.42 mm
August18.3 °C27.6 °C109.73 mm
September14.3 °C24.2 °C118.11 mm
October8.2 °C17.9 °C117.6 mm
November2.7 °C11.9 °C103.12 mm
December-1.7 °C6.3 °C113.54 mm
Annual6.7 °C16.1 °C1262.62 mm

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 : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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