Bristol Connecticut Climate Data

Monthly Average Climate Data for Bristol Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.7 °C2.3 °C93.73 mm
February-7 °C3.9 °C85.6 mm
March-2.9 °C8.3 °C117.86 mm
April2.9 °C15.4 °C104.14 mm
May8.6 °C21.5 °C102.87 mm
June13.8 °C26.2 °C116.08 mm
July16.8 °C29.1 °C114.3 mm
August15.8 °C28.1 °C112.52 mm
September11.8 °C24.1 °C122.94 mm
October5.4 °C17.3 °C139.45 mm
November0.1 °C10.9 °C103.12 mm
December-4.2 °C5.2 °C118.87 mm
Annual4.5 °C16 °C1331.48 mm

Climate Data for Bristol Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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