Warren, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.7 °F (low) to 79.2 °F (high). Annual precipitation averages 59.7 Inches. Warren 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 | 38.8 °F | 62.1 °F | 5.02 in. |
| February | 42.4 °F | 66.0 °F | 4.45 in. |
| March | 48.7 °F | 72.9 °F | 4.43 in. |
| April | 55.1 °F | 79.1 °F | 4.46 in. |
| May | 63.0 °F | 85.5 °F | 5.08 in. |
| June | 69.2 °F | 91.2 °F | 5.76 in. |
| July | 71.2 °F | 93.7 °F | 4.43 in. |
| August | 70.8 °F | 94.4 °F | 5.07 in. |
| September | 66.2 °F | 89.8 °F | 4.66 in. |
| October | 55.7 °F | 81.6 °F | 5.61 in. |
| November | 46.7 °F | 71.0 °F | 5.11 in. |
| December | 40.7 °F | 63.4 °F | 5.66 in. |
| Annual | 55.7 °F | 79.2 °F | 59.74 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |