| 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 7b: 5F to 10F |
| 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: | 29d - Grand Prairie |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 76247 - Justin, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 35 | 43 | 52 | 61 | 68 | 72 | 71 | 65 | 54 | 42 | 34 | 52 |
| Avg Max Temp (°F) | 54 | 60 | 67 | 75 | 82 | 90 | 95 | 94 | 87 | 77 | 65 | 57 | 75 |
| Avg Precip (In.) | 1.89 | 2.39 | 3.04 | 3.36 | 5.26 | 3.71 | 2.3 | 2.23 | 3.12 | 4.49 | 2.78 | 2.59 | 37.17 |