Charlestown Indiana Climate Data

Monthly Average Climate Data for Charlestown Indiana

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.8 °C5.3 °C89.15 mm
February-2.4 °C7.9 °C84.07 mm
March1.8 °C13.5 °C113.79 mm
April7.3 °C20 °C126.49 mm
May13.2 °C24.9 °C130.56 mm
June17.8 °C29.1 °C130.05 mm
July19.7 °C30.8 °C107.7 mm
August18.9 °C30.5 °C93.73 mm
September14.7 °C27.1 °C91.19 mm
October8.2 °C21 °C93.22 mm
November2.4 °C13.6 °C92.96 mm
December-1.5 °C7.6 °C108.71 mm
Annual8 °C19.3 °C1261.62 mm

Climate Data for Charlestown Indiana

Average First Frost DateOct. 21 - Oct. 31
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 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation