| 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 Zone 7b: 5°F to 10°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: | 32a - Northern Blackland Prairie |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 75092 - Sherman, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 36 | 44 | 51 | 60 | 68 | 73 | 72 | 64 | 53 | 42 | 34 | 52 |
| Avg Max Temp (°F) | 51 | 57 | 65 | 73 | 80 | 88 | 93 | 93 | 86 | 76 | 63 | 54 | 73 |
| Avg Precip (In.) | 2.11 | 2.67 | 3.45 | 3.54 | 5.51 | 4.46 | 2.28 | 2.24 | 4.09 | 5.02 | 3.74 | 2.88 | 41.97 |