Decatur Tennessee Climate Data

Monthly Average Climate Data for Decatur Tennessee

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January28.0 °F48.4 °F5.55 in.
February30.5 °F52.9 °F5.31 in.
March36.4 °F61.7 °F5.76 in.
April44.4 °F71.3 °F5.38 in.
May54.8 °F79.1 °F4.53 in.
June62.9 °F85.8 °F4.94 in.
July67.2 °F88.6 °F5.93 in.
August65.9 °F88.3 °F3.99 in.
September59.0 °F83.5 °F4.81 in.
October46.7 °F72.7 °F3.39 in.
November35.5 °F60.7 °F4.7 in.
December30.8 °F51.2 °F6.14 in.
Annual46.8 °F70.4 °F60.43 in.

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