Glenville Connecticut Climate Data

Monthly Average Climate Data for Glenville Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.6 °C3.7 °C101.09 mm
February-4.1 °C4.9 °C73.66 mm
March-0.3 °C8.8 °C105.41 mm
April5.2 °C15.6 °C102.62 mm
May10.6 °C21.1 °C96.27 mm
June15.9 °C26.1 °C116.33 mm
July18.9 °C29.1 °C101.35 mm
August18.6 °C27.9 °C117.35 mm
September14.7 °C24.3 °C121.92 mm
October8.8 °C18.1 °C114.05 mm
November3.4 °C12.1 °C99.31 mm
December-0.9 °C6.7 °C112.01 mm
Annual7.2 °C16.5 °C1261.37 mm

Climate Data for Glenville 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