| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | Nov. 21 - Nov. 30 |
| Average Last Frost Date: | Mar. 1 - Mar. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 35e - Southern Tertiary Uplands |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 77360 - Onalaska, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 40 | 47 | 54 | 62 | 69 | 71 | 70 | 66 | 55 | 46 | 39 | 55 |
| Avg Max Temp (°F) | 60 | 64 | 72 | 78 | 84 | 90 | 94 | 94 | 89 | 81 | 70 | 62 | 78 |
| Avg Precip (In.) | 4.43 | 3.34 | 3.76 | 3.65 | 5.34 | 5.05 | 3.2 | 3.36 | 4.36 | 4.16 | 4.59 | 4.61 | 49.86 |