| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°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. 11 - Nov. 20 |
| Average Last Frost Date: | Mar. 11 - Mar. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 35a - Tertiary Uplands |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 75650 - Hallsville, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 38 | 45 | 52 | 61 | 68 | 72 | 71 | 65 | 53 | 44 | 36 | 53 |
| Avg Max Temp (°F) | 56 | 61 | 69 | 76 | 83 | 89 | 94 | 94 | 87 | 78 | 66 | 58 | 76 |
| Avg Precip (In.) | 4.09 | 3.85 | 4.24 | 4.11 | 4.68 | 4.8 | 2.88 | 2.59 | 3.65 | 4.44 | 4.8 | 4.76 | 48.89 |