Newtown Connecticut Climate Data

Monthly Average Climate Data for Newtown Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.5 °C2.2 °C99.57 mm
February-6.7 °C3.8 °C79.76 mm
March-2.7 °C8.2 °C111 mm
April3.1 °C15.1 °C104.39 mm
May8.7 °C21.2 °C100.58 mm
June13.8 °C25.8 °C119.63 mm
July16.9 °C28.7 °C115.06 mm
August16 °C27.6 °C117.35 mm
September11.9 °C23.6 °C118.36 mm
October5.4 °C17.1 °C123.44 mm
November0.1 °C10.8 °C106.17 mm
December-4.2 °C4.9 °C113.03 mm
Annual4.6 °C15.8 °C1308.34 mm

Climate Data for Newtown Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°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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