| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | 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. 21 - Mar. 31 |
| 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 75501 - Texarkana, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 35 | 43 | 51 | 61 | 68 | 72 | 70 | 64 | 52 | 42 | 34 | 52 |
| Avg Max Temp (°F) | 53 | 59 | 67 | 75 | 82 | 89 | 93 | 93 | 87 | 77 | 64 | 56 | 75 |
| Avg Precip (In.) | 3.67 | 3.49 | 4.31 | 4.13 | 4.44 | 4.62 | 3.57 | 2.53 | 3.48 | 4.05 | 5.35 | 4.9 | 48.53 |