Whitehouse, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.7 °C (low) to 24.8 °C (high). Annual precipitation averages 1186.7 Millimeters. Whitehouse is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.3 °C | 14.1 °C | 96.27 mm |
| February | 4.3 °C | 16.4 °C | 105.41 mm |
| March | 8.1 °C | 20.7 °C | 113.03 mm |
| April | 11.9 °C | 24.8 °C | 104.39 mm |
| May | 17.2 °C | 28.6 °C | 117.6 mm |
| June | 21.1 °C | 32.2 °C | 107.19 mm |
| July | 22.8 °C | 34.2 °C | 59.69 mm |
| August | 22.3 °C | 34.5 °C | 75.18 mm |
| September | 18.8 °C | 31.3 °C | 78.49 mm |
| October | 12.8 °C | 25.9 °C | 113.54 mm |
| November | 7.3 °C | 19.6 °C | 102.11 mm |
| December | 3.3 °C | 14.9 °C | 113.79 mm |
| Annual | 12.7 °C | 24.8 °C | 1186.69 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |