Waller, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 57.8 °F (low) to 79.1 °F (high). Annual precipitation averages 47.2 Inches. Waller 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 | 40.6 °F | 61.8 °F | 3.58 in. |
| February | 44.3 °F | 65.4 °F | 2.92 in. |
| March | 50.7 °F | 72.0 °F | 3.37 in. |
| April | 57.2 °F | 78.5 °F | 3.56 in. |
| May | 65.5 °F | 85.3 °F | 5.08 in. |
| June | 71.4 °F | 91.0 °F | 4.59 in. |
| July | 73.2 °F | 93.7 °F | 2.91 in. |
| August | 72.7 °F | 95.1 °F | 3.95 in. |
| September | 68.1 °F | 89.9 °F | 4.51 in. |
| October | 58.2 °F | 81.8 °F | 4.7 in. |
| November | 49.0 °F | 71.4 °F | 4.37 in. |
| December | 42.3 °F | 63.7 °F | 3.69 in. |
| Annual | 57.8 °F | 79.1 °F | 47.23 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 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 |