Marietta Georgia Climate Data

Monthly Average Climate Data for Marietta Georgia

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January31.4 °F51.5 °F4.91 in.
February34.3 °F55.6 °F4.82 in.
March40.6 °F63.4 °F4.98 in.
April49.2 °F71.6 °F4.48 in.
May58.2 °F78.9 °F4.19 in.
June66.1 °F84.9 °F4.35 in.
July69.5 °F87.8 °F5.07 in.
August68.8 °F87.3 °F4.04 in.
September62.7 °F82.1 °F4.31 in.
October51.0 °F72.6 °F3.68 in.
November39.8 °F62.2 °F4.27 in.
December34.4 °F53.9 °F4.88 in.
Annual50.5 °F71 °F53.98 in.

Climate Data for Marietta 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 : 10°F to 15°F
Plant Hardiness Zone - 2012Zone 7b : 5°F to 10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate