Coleman, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52 °F (low) to 77.8 °F (high). Annual precipitation averages 27.8 Inches. Coleman 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 | 32.3 °F | 58.7 °F | 1.26 in. |
| February | 36.3 °F | 62.9 °F | 1.8 in. |
| March | 43.8 °F | 70.1 °F | 2.22 in. |
| April | 50.6 °F | 78.6 °F | 1.85 in. |
| May | 60.3 °F | 85.4 °F | 3.65 in. |
| June | 67.7 °F | 91.8 °F | 3.76 in. |
| July | 70.5 °F | 95.4 °F | 2.21 in. |
| August | 70.3 °F | 95.3 °F | 2.4 in. |
| September | 63.4 °F | 88.5 °F | 2.58 in. |
| October | 52.4 °F | 79.4 °F | 2.68 in. |
| November | 41.8 °F | 67.7 °F | 1.98 in. |
| December | 34.1 °F | 59.8 °F | 1.38 in. |
| Annual | 52 °F | 77.8 °F | 27.77 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 |