Fulton, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 65.3 °F (low) to 78.1 °F (high). Annual precipitation averages 35.4 Inches. Fulton is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 48.3 °F | 63.9 °F | 2.57 in. |
| February | 52.0 °F | 67.1 °F | 1.9 in. |
| March | 58.4 °F | 72.0 °F | 2.5 in. |
| April | 65.0 °F | 77.1 °F | 2.0 in. |
| May | 72.4 °F | 82.4 °F | 3.39 in. |
| June | 77.8 °F | 87.3 °F | 3.84 in. |
| July | 79.0 °F | 88.5 °F | 2.92 in. |
| August | 78.5 °F | 89.8 °F | 2.32 in. |
| September | 75.0 °F | 87.8 °F | 5.36 in. |
| October | 68.3 °F | 81.6 °F | 3.6 in. |
| November | 58.3 °F | 73.3 °F | 3.06 in. |
| December | 50.6 °F | 66.4 °F | 1.95 in. |
| Annual | 65.3 °F | 78.1 °F | 35.41 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |