Signal Mountain Tennessee Climate Data

Monthly Average Climate Data for Signal Mountain Tennessee

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-1.9 °C7.3 °C161.29 mm
February-0.2 °C9.7 °C151.13 mm
March3.7 °C14.5 °C162.05 mm
April8.6 °C20 °C144.02 mm
May13.2 °C24.1 °C132.08 mm
June17.2 °C27.6 °C138.94 mm
July19 °C29.3 °C142.24 mm
August18.6 °C29 °C110.74 mm
September15.3 °C26.1 °C136.4 mm
October9.2 °C20.3 °C105.16 mm
November4 °C13.8 °C150.37 mm
December0.3 °C8.8 °C187.2 mm
Annual8.9 °C19.2 °C1721.62 mm

Climate Data for Signal Mountain Tennessee

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost50-75 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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