Carrizo Hill, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15 °C (low) to 28.9 °C (high). Annual precipitation averages 517.7 Millimeters. Carrizo Hill 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 | 4.9 °C | 19.2 °C | 25.65 mm |
| February | 7.3 °C | 21.8 °C | 20.83 mm |
| March | 11.5 °C | 25.7 °C | 37.85 mm |
| April | 15 °C | 29.7 °C | 36.32 mm |
| May | 19.6 °C | 33 °C | 78.99 mm |
| June | 22.7 °C | 36 °C | 50.55 mm |
| July | 23.4 °C | 37 °C | 41.4 mm |
| August | 23.6 °C | 37.3 °C | 33.02 mm |
| September | 20.9 °C | 33.8 °C | 87.12 mm |
| October | 15.8 °C | 29.6 °C | 50.55 mm |
| November | 10.1 °C | 23.7 °C | 30.73 mm |
| December | 5.6 °C | 19.6 °C | 24.64 mm |
| Annual | 15 °C | 28.9 °C | 517.65 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |