Portland Tennessee Climate Data

Monthly Average Climate Data for Portland Tennessee

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-2.7 °C6.9 °C109.47 mm
February-1.1 °C9.6 °C115.06 mm
March3.3 °C14.6 °C128.52 mm
April8.2 °C20.4 °C123.19 mm
May13.9 °C24.9 °C142.24 mm
June18.2 °C29.1 °C116.08 mm
July20.1 °C30.9 °C119.13 mm
August19.3 °C30.6 °C92.46 mm
September15.3 °C27.4 °C93.73 mm
October8.9 °C21.4 °C93.47 mm
November3.2 °C14.4 °C96.01 mm
December-0.3 °C9 °C128.02 mm
Annual8.9 °C19.9 °C1357.38 mm

Climate Data for Portland Tennessee

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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