| 2023 Hardiness Zone: | 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 76233 - Collinsville, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 34 | 42 | 50 | 60 | 68 | 73 | 71 | 64 | 53 | 41 | 32 | 51 |
| Avg Max Temp (°F) | 52 | 58 | 66 | 74 | 82 | 90 | 95 | 95 | 87 | 77 | 64 | 55 | 75 |
| Avg Precip (In.) | 2.03 | 2.6 | 3.45 | 3.39 | 5.5 | 4.18 | 2.34 | 2.35 | 3.84 | 4.68 | 3.13 | 2.67 | 40.17 |