| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Mar. 21 - Mar. 31 |
| 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 76380 - Seymour, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 32 | 40 | 48 | 58 | 67 | 72 | 70 | 63 | 51 | 39 | 30 | 50 |
| Avg Max Temp (°F) | 53 | 58 | 67 | 76 | 84 | 91 | 97 | 96 | 87 | 77 | 64 | 55 | 75 |
| Avg Precip (In.) | 1.04 | 1.56 | 1.85 | 1.95 | 4.14 | 3.61 | 1.89 | 2.56 | 3.49 | 2.87 | 1.47 | 1.42 | 27.86 |