Harriman Tennessee Climate Data

Monthly Average Climate Data for Harriman Tennessee

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January28.3 °F47.6 °F5.32 in.
February30.9 °F52.1 °F5.5 in.
March37.3 °F61.2 °F5.55 in.
April45.6 °F70.8 °F5.35 in.
May55.4 °F78.7 °F4.59 in.
June63.8 °F85.2 °F4.78 in.
July67.6 °F87.9 °F6.4 in.
August66.5 °F87.5 °F3.79 in.
September60.1 °F82.7 °F4.21 in.
October47.8 °F71.8 °F3.31 in.
November36.8 °F60.1 °F4.49 in.
December31.6 °F50.7 °F6.38 in.
Annual47.6 °F69.7 °F59.67 in.

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 : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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