Jesup, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.4 °F (low) to 78.7 °F (high). Annual precipitation averages 49.6 Inches. Jesup is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.3 °F | 62.5 °F | 4.13 in. |
| February | 40.9 °F | 65.8 °F | 3.66 in. |
| March | 46.7 °F | 72.4 °F | 3.99 in. |
| April | 53.3 °F | 79.3 °F | 3.35 in. |
| May | 61.4 °F | 86.0 °F | 3.21 in. |
| June | 69.1 °F | 90.3 °F | 6.26 in. |
| July | 71.8 °F | 92.9 °F | 5.54 in. |
| August | 71.7 °F | 91.7 °F | 6.14 in. |
| September | 67.4 °F | 87.2 °F | 3.98 in. |
| October | 56.9 °F | 79.7 °F | 3.77 in. |
| November | 46.0 °F | 71.3 °F | 2.34 in. |
| December | 41.0 °F | 64.7 °F | 3.25 in. |
| Annual | 55.4 °F | 78.7 °F | 49.62 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |