Alpharetta Georgia Climate Data

Monthly Average Climate Data for Alpharetta Georgia

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-0.7 °C10.6 °C125.98 mm
February0.9 °C12.9 °C123.19 mm
March4.4 °C17.4 °C130.05 mm
April8.7 °C22.1 °C109.98 mm
May13.8 °C26.1 °C101.6 mm
June18.3 °C29.4 °C108.97 mm
July20.2 °C31.1 °C127.76 mm
August19.8 °C30.8 °C107.95 mm
September16.3 °C27.9 °C112.52 mm
October9.9 °C22.5 °C94.49 mm
November3.8 °C16.6 °C108.2 mm
December1.1 °C12 °C119.63 mm
Annual9.7 °C21.6 °C1370.32 mm

Climate Data for Alpharetta Georgia

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 8a : -12.2°C to -9.4°C
Plant Hardiness Zone - 2012Zone 7b : -15°C to -12.2°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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