Signal Mountain Tennessee Climate Data

Monthly Average Climate Data for Signal Mountain Tennessee

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January28.5 °F45.1 °F6.35 in.
February31.6 °F49.5 °F5.95 in.
March38.7 °F58.1 °F6.38 in.
April47.4 °F68.0 °F5.67 in.
May55.7 °F75.3 °F5.2 in.
June63.0 °F81.7 °F5.47 in.
July66.2 °F84.8 °F5.6 in.
August65.4 °F84.2 °F4.36 in.
September59.6 °F79.0 °F5.37 in.
October48.6 °F68.6 °F4.14 in.
November39.2 °F56.9 °F5.92 in.
December32.6 °F47.9 °F7.37 in.
Annual48 °F66.6 °F67.78 in.

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