| 2023 Hardiness Zone: | 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. 21 - Nov. 30 | |
| Average Last Frost Date: | Feb. 21 - Feb. 29 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 24b - Chihuahuan Desert Grasslands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 151 - 180 days Over 86°F |
Annual Climate Data for ZIP Code 79852 - Terlingua, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 38 | 45 | 53 | 63 | 70 | 72 | 71 | 66 | 55 | 42 | 34 | 54 |
| Avg Max Temp (°F) | 67 | 73 | 81 | 88 | 96 | 97 | 99 | 97 | 93 | 86 | 75 | 67 | 85 |
| Avg Precip (In.) | .32 | .38 | .2 | .51 | 1.09 | 1.5 | 1.72 | 1.79 | 1.81 | 1.31 | .46 | .39 | 11.49 |