| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Nov. 11 - Nov. 20 | |
| Average Last Frost Date: | Mar. 21 - Mar. 31 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 30c - Balcones Canyonlands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 78015 - Boerne, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 39 | 46 | 53 | 62 | 68 | 70 | 70 | 65 | 55 | 45 | 37 | 54 |
| Avg Max Temp (°F) | 61 | 65 | 73 | 79 | 84 | 90 | 93 | 94 | 89 | 80 | 70 | 62 | 78 |
| Avg Precip (In.) | 1.79 | 2.16 | 2.36 | 2.81 | 4.51 | 4.53 | 2.11 | 2.72 | 3.36 | 4.08 | 2.93 | 2.26 | 35.63 |