| 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. 21 - Mar. 31 |
| 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 75077 - Lewisville, 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 | 94 | 87 | 78 | 65 | 57 | 75 |
| Avg Precip (In.) | 1.95 | 2.46 | 3.03 | 3.38 | 5.23 | 3.61 | 2.33 | 2.17 | 3.15 | 4.44 | 2.83 | 2.7 | 37.28 |