| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°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. 11 - Mar. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 29b - Eastern Cross Timbers |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 76034 - Colleyville, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 36 | 44 | 52 | 61 | 69 | 73 | 72 | 66 | 55 | 44 | 35 | 53 |
| Avg Max Temp (°F) | 54 | 60 | 68 | 76 | 83 | 90 | 95 | 95 | 88 | 78 | 65 | 57 | 76 |
| Avg Precip (In.) | 1.93 | 2.39 | 2.99 | 3.35 | 5.1 | 3.57 | 2.27 | 2.14 | 2.95 | 4.3 | 2.69 | 2.62 | 36.3 |