Caddo Mills, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.3 °F (low) to 75.8 °F (high). Annual precipitation averages 42.9 Inches. Caddo Mills 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 | 34.4 °F | 55.5 °F | 2.8 in. |
| February | 38.0 °F | 59.7 °F | 3.21 in. |
| March | 45.4 °F | 67.3 °F | 3.93 in. |
| April | 52.8 °F | 74.7 °F | 3.8 in. |
| May | 62.5 °F | 82.1 °F | 5.0 in. |
| June | 70.4 °F | 90.1 °F | 3.89 in. |
| July | 73.6 °F | 94.3 °F | 2.29 in. |
| August | 72.9 °F | 95.1 °F | 2.52 in. |
| September | 65.8 °F | 88.5 °F | 3.19 in. |
| October | 54.6 °F | 78.2 °F | 4.92 in. |
| November | 44.4 °F | 66.4 °F | 3.6 in. |
| December | 36.4 °F | 57.5 °F | 3.74 in. |
| Annual | 54.3 °F | 75.8 °F | 42.89 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 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 |