Henrietta, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 24.5 °C (high). Annual precipitation averages 799.1 Millimeters. Henrietta is located in USDA Plant Hardiness Zone 8a. 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 | -1.5 °C | 12.7 °C | 40.89 mm |
| February | 0.3 °C | 15 °C | 46.99 mm |
| March | 5 °C | 19.8 °C | 63.75 mm |
| April | 9.3 °C | 24.3 °C | 76.71 mm |
| May | 15.3 °C | 28.4 °C | 103.38 mm |
| June | 19.8 °C | 32.9 °C | 97.03 mm |
| July | 21.9 °C | 35.9 °C | 53.09 mm |
| August | 21.4 °C | 35.9 °C | 63.25 mm |
| September | 17.1 °C | 31.5 °C | 68.58 mm |
| October | 10.6 °C | 25.6 °C | 85.09 mm |
| November | 4.4 °C | 18.7 °C | 50.8 mm |
| December | -0.5 °C | 13.3 °C | 49.53 mm |
| Annual | 10.3 °C | 24.5 °C | 799.09 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |