| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°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. 21 - Nov. 30 |
| 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 75766 - Jacksonville, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 39 | 46 | 53 | 62 | 69 | 72 | 71 | 65 | 55 | 45 | 38 | 54 |
| Avg Max Temp (°F) | 57 | 62 | 70 | 76 | 83 | 90 | 94 | 94 | 88 | 79 | 67 | 59 | 77 |
| Avg Precip (In.) | 3.92 | 3.52 | 3.84 | 3.72 | 4.88 | 4.27 | 2.63 | 2.33 | 3.9 | 4.6 | 4.38 | 3.98 | 45.97 |