Harriman Tennessee Climate Data

Monthly Average Climate Data for Harriman Tennessee

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-2.1 °C8.7 °C135.13 mm
February-0.6 °C11.2 °C139.7 mm
March2.9 °C16.2 °C140.97 mm
April7.6 °C21.6 °C135.89 mm
May13 °C25.9 °C116.59 mm
June17.7 °C29.6 °C121.41 mm
July19.8 °C31.1 °C162.56 mm
August19.2 °C30.8 °C96.27 mm
September15.6 °C28.2 °C106.93 mm
October8.8 °C22.1 °C84.07 mm
November2.7 °C15.6 °C114.05 mm
December-0.2 °C10.4 °C162.05 mm
Annual8.7 °C21 °C1515.62 mm

Climate Data for Harriman Tennessee

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
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 ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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