Kerrville, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.8 °F (low) to 77.8 °F (high). Annual precipitation averages 31.3 Inches. Kerrville is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.0 °F | 60.5 °F | 1.78 in. |
| February | 37.8 °F | 64.6 °F | 1.77 in. |
| March | 45.3 °F | 71.2 °F | 2.64 in. |
| April | 52.0 °F | 78.1 °F | 2.35 in. |
| May | 61.3 °F | 83.8 °F | 4.5 in. |
| June | 67.8 °F | 90.2 °F | 3.27 in. |
| July | 70.1 °F | 93.0 °F | 2.15 in. |
| August | 69.5 °F | 94.2 °F | 2.31 in. |
| September | 63.5 °F | 88.2 °F | 3.31 in. |
| October | 53.7 °F | 79.6 °F | 3.04 in. |
| November | 43.4 °F | 68.9 °F | 2.24 in. |
| December | 35.4 °F | 61.6 °F | 1.92 in. |
| Annual | 52.8 °F | 77.8 °F | 31.28 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |