| 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. 11 - Mar. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 30c - Balcones Canyonlands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 78070 - Spring Branch, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 40 | 47 | 54 | 63 | 69 | 71 | 71 | 66 | 56 | 46 | 38 | 55 |
| Avg Max Temp (°F) | 60 | 65 | 72 | 79 | 85 | 90 | 94 | 95 | 89 | 81 | 70 | 62 | 79 |
| Avg Precip (In.) | 1.79 | 2.13 | 2.24 | 2.63 | 4.3 | 4.53 | 2.08 | 2.3 | 3.04 | 3.98 | 3.03 | 2.17 | 34.22 |