| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°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: | 29b - Eastern Cross Timbers |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 75028 - Flower Mound, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 36 | 44 | 52 | 61 | 69 | 73 | 72 | 65 | 54 | 43 | 34 | 53 |
| Avg Max Temp (°F) | 54 | 60 | 68 | 75 | 82 | 90 | 95 | 95 | 87 | 78 | 65 | 57 | 75 |
| Avg Precip (In.) | 1.9 | 2.42 | 2.97 | 3.39 | 5.11 | 3.59 | 2.29 | 2.11 | 3.04 | 4.33 | 2.77 | 2.66 | 36.58 |