Iredell, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.3 °F (low) to 77.7 °F (high). Annual precipitation averages 35.7 Inches. Iredell is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.3 °F | 58.4 °F | 2.26 in. |
| February | 37.1 °F | 62.4 °F | 2.43 in. |
| March | 44.8 °F | 69.6 °F | 3.14 in. |
| April | 52.2 °F | 77.9 °F | 3.05 in. |
| May | 61.8 °F | 84.6 °F | 4.48 in. |
| June | 69.4 °F | 91.7 °F | 4.13 in. |
| July | 72.2 °F | 95.9 °F | 1.88 in. |
| August | 71.7 °F | 96.1 °F | 2.45 in. |
| September | 64.7 °F | 89.3 °F | 3.13 in. |
| October | 53.8 °F | 79.4 °F | 3.84 in. |
| November | 43.4 °F | 67.8 °F | 2.59 in. |
| December | 35.0 °F | 59.7 °F | 2.34 in. |
| Annual | 53.3 °F | 77.7 °F | 35.72 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |