Warren, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.2 °C (low) to 26.2 °C (high). Annual precipitation averages 1517.4 Millimeters. 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 | 3.8 °C | 16.7 °C | 127.51 mm |
| February | 5.8 °C | 18.9 °C | 113.03 mm |
| March | 9.3 °C | 22.7 °C | 112.52 mm |
| April | 12.8 °C | 26.2 °C | 113.28 mm |
| May | 17.2 °C | 29.7 °C | 129.03 mm |
| June | 20.7 °C | 32.9 °C | 146.3 mm |
| July | 21.8 °C | 34.3 °C | 112.52 mm |
| August | 21.6 °C | 34.7 °C | 128.78 mm |
| September | 19 °C | 32.1 °C | 118.36 mm |
| October | 13.2 °C | 27.6 °C | 142.49 mm |
| November | 8.2 °C | 21.7 °C | 129.79 mm |
| December | 4.8 °C | 17.4 °C | 143.76 mm |
| Annual | 13.2 °C | 26.2 °C | 1517.37 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |