| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 25i - Llano Estacado |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 79121 - Amarillo, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 26 | 33 | 41 | 51 | 60 | 65 | 63 | 56 | 44 | 32 | 24 | 43 |
| Avg Max Temp (°F) | 50 | 56 | 64 | 72 | 80 | 88 | 91 | 89 | 83 | 73 | 60 | 51 | 71 |
| Avg Precip (In.) | .56 | .58 | 1.1 | 1.24 | 2.73 | 3.11 | 2.53 | 2.92 | 2.01 | 1.62 | .73 | .64 | 19.76 |