Bulverde, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.4 °C (low) to 26.2 °C (high). Annual precipitation averages 911.6 Millimeters. Bulverde is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.4 °C | 16.5 °C | 56.13 mm |
| February | 5.6 °C | 18.8 °C | 51.05 mm |
| March | 9.3 °C | 22.4 °C | 68.33 mm |
| April | 12.9 °C | 26.3 °C | 63.75 mm |
| May | 17.8 °C | 29.6 °C | 110.49 mm |
| June | 21.2 °C | 33 °C | 96.01 mm |
| July | 22.2 °C | 34.6 °C | 57.91 mm |
| August | 22.2 °C | 35.3 °C | 65.53 mm |
| September | 19.3 °C | 31.9 °C | 101.09 mm |
| October | 14 °C | 27.3 °C | 113.03 mm |
| November | 8.4 °C | 21.4 °C | 71.63 mm |
| December | 4.4 °C | 17.3 °C | 56.64 mm |
| Annual | 13.4 °C | 26.2 °C | 911.59 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |