| 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. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 30b - Llano Uplift | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 78643 - Llano, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 37 | 44 | 52 | 62 | 68 | 71 | 70 | 64 | 54 | 43 | 35 | 53 |
| Avg Max Temp (°F) | 60 | 64 | 72 | 79 | 85 | 91 | 96 | 95 | 89 | 80 | 69 | 61 | 78 |
| Avg Precip (In.) | 1.11 | 1.84 | 1.92 | 2.27 | 4.02 | 3.44 | 1.86 | 2.14 | 2.25 | 2.93 | 2.19 | 1.86 | 27.81 |