| 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. 21 - Mar. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 33a - Northern Post Oak Savanna |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 75474 - Quinlan, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 36 | 44 | 51 | 60 | 68 | 72 | 71 | 64 | 53 | 42 | 34 | 52 |
| Avg Max Temp (°F) | 53 | 59 | 67 | 74 | 81 | 89 | 94 | 94 | 88 | 77 | 65 | 56 | 75 |
| Avg Precip (In.) | 2.62 | 3.05 | 3.56 | 3.66 | 5.25 | 4.06 | 2.51 | 2.09 | 3.3 | 4.86 | 3.82 | 3.49 | 42.26 |