Georgetown, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.4 °C (low) to 25.3 °C (high). Annual precipitation averages 1327.9 Millimeters. Georgetown is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.7 °C | 16.3 °C | 91.95 mm |
| February | 5.3 °C | 18.2 °C | 85.85 mm |
| March | 8.7 °C | 21.7 °C | 92.46 mm |
| April | 12.4 °C | 25.4 °C | 80.77 mm |
| May | 17 °C | 29.1 °C | 88.14 mm |
| June | 21 °C | 31.8 °C | 156.72 mm |
| July | 22.6 °C | 33.3 °C | 152.65 mm |
| August | 22.4 °C | 32.5 °C | 196.34 mm |
| September | 20.1 °C | 30.1 °C | 125.48 mm |
| October | 14.3 °C | 26.1 °C | 104.39 mm |
| November | 8.3 °C | 21.2 °C | 64.26 mm |
| December | 5.2 °C | 17.7 °C | 88.9 mm |
| Annual | 13.4 °C | 25.3 °C | 1327.91 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |