| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Dec. 21 - Dec. 31 | |
| Average Last Frost Date: | Feb. 1 - Feb. 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 34c - Floodplains and Low Terraces | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 77488 - Wharton, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 42 | 45 | 52 | 59 | 66 | 71 | 73 | 72 | 68 | 59 | 51 | 44 | 59 |
| Avg Max Temp (°F) | 63 | 66 | 73 | 79 | 85 | 91 | 94 | 94 | 90 | 83 | 73 | 65 | 80 |
| Avg Precip (In.) | 3.38 | 2.71 | 2.85 | 3.04 | 4.88 | 4.55 | 3.29 | 3.48 | 5.18 | 4.49 | 4.07 | 3.26 | 45.19 |