| 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: | 32a - Northern Blackland Prairie |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 75078 - Prosper, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 35 | 43 | 51 | 60 | 68 | 73 | 71 | 64 | 53 | 42 | 33 | 52 |
| Avg Max Temp (°F) | 53 | 59 | 67 | 75 | 82 | 90 | 95 | 95 | 87 | 77 | 64 | 56 | 75 |
| Avg Precip (In.) | 2.11 | 2.69 | 3.34 | 3.45 | 5.57 | 4.1 | 2.4 | 2.28 | 3.51 | 4.58 | 3.2 | 2.91 | 40.15 |