Charleston Tennessee Climate Data

Monthly Average Climate Data for Charleston Tennessee

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-1.8 °C9.3 °C137.41 mm
February-0.3 °C11.8 °C122.43 mm
March3.1 °C16.6 °C145.03 mm
April7.7 °C21.9 °C126.24 mm
May13.2 °C26.2 °C111.25 mm
June17.7 °C29.9 °C123.95 mm
July19.9 °C31.6 °C139.95 mm
August19.2 °C31.3 °C97.79 mm
September15.6 °C28.5 °C120.65 mm
October8.5 °C22.7 °C82.3 mm
November2.2 °C16.1 °C119.13 mm
December-0.3 °C10.9 °C145.03 mm
Annual8.7 °C21.4 °C1471.16 mm

Climate Data for Charleston Tennessee

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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