| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| 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: | 27h - Red Prairie |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 79225 - Chillicothe, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 30 | 38 | 47 | 58 | 67 | 71 | 70 | 62 | 50 | 37 | 28 | 49 |
| Avg Max Temp (°F) | 52 | 58 | 67 | 75 | 84 | 92 | 97 | 95 | 87 | 77 | 63 | 54 | 75 |
| Avg Precip (In.) | 1 | 1.25 | 1.83 | 2.23 | 4.09 | 3.74 | 2.15 | 2.66 | 3.34 | 2.61 | 1.45 | 1.16 | 27.48 |