Weston Connecticut Climate Data

Monthly Average Climate Data for Weston Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.3 °C3.1 °C99.31 mm
February-5.6 °C4.5 °C78.23 mm
March-1.4 °C8.6 °C107.7 mm
April4.1 °C15.5 °C103.38 mm
May9.5 °C21.2 °C99.06 mm
June14.9 °C26 °C121.92 mm
July17.9 °C28.9 °C96.27 mm
August17.2 °C27.9 °C115.06 mm
September13.2 °C24.1 °C119.63 mm
October6.7 °C17.7 °C115.82 mm
November1.3 °C11.6 °C104.14 mm
December-3 °C5.9 °C114.55 mm
Annual5.7 °C16.3 °C1275.07 mm

Climate Data for Weston Connecticut

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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