| 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 Zone 8a: 10°F to 15°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| 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 78605 - Bertram, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 38 | 45 | 53 | 62 | 68 | 70 | 69 | 64 | 54 | 44 | 36 | 53 |
| Avg Max Temp (°F) | 59 | 64 | 71 | 78 | 84 | 90 | 95 | 95 | 89 | 80 | 68 | 61 | 78 |
| Avg Precip (In.) | 1.74 | 2.26 | 2.34 | 2.7 | 4.71 | 3.67 | 1.88 | 2.17 | 3.07 | 3.72 | 2.52 | 2.28 | 33.08 |