| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Feb. 21 - Feb. 29 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 35f - Flatwoods |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 77656 - Silsbee, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 41 | 48 | 55 | 63 | 68 | 70 | 70 | 66 | 55 | 47 | 40 | 55 |
| Avg Max Temp (°F) | 60 | 65 | 72 | 78 | 84 | 90 | 93 | 93 | 89 | 81 | 70 | 63 | 78 |
| Avg Precip (In.) | 5.45 | 3.71 | 4.16 | 3.95 | 5.52 | 5.84 | 4.37 | 4.25 | 4.9 | 4.95 | 4.92 | 5.14 | 57.15 |