Guyton, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13 °C (low) to 25.4 °C (high). Annual precipitation averages 1253 Millimeters. Guyton is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.2 °C | 16.2 °C | 97.54 mm |
| February | 4.8 °C | 18.2 °C | 92.71 mm |
| March | 8.1 °C | 21.9 °C | 87.38 mm |
| April | 12 °C | 25.7 °C | 84.07 mm |
| May | 16.7 °C | 29.3 °C | 84.58 mm |
| June | 20.8 °C | 32.5 °C | 148.34 mm |
| July | 22.4 °C | 33.9 °C | 137.41 mm |
| August | 22.2 °C | 32.9 °C | 156.72 mm |
| September | 19.7 °C | 30.1 °C | 110.74 mm |
| October | 13.8 °C | 25.7 °C | 87.88 mm |
| November | 7.6 °C | 20.8 °C | 68.58 mm |
| December | 4.6 °C | 17.2 °C | 97.03 mm |
| Annual | 13 °C | 25.4 °C | 1252.98 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |