| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| 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: | 29b - Eastern Cross Timbers |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 76093 - Rio Vista, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 38 | 45 | 53 | 62 | 69 | 72 | 71 | 65 | 55 | 44 | 36 | 54 |
| Avg Max Temp (°F) | 57 | 63 | 70 | 78 | 85 | 92 | 97 | 97 | 89 | 80 | 67 | 59 | 78 |
| Avg Precip (In.) | 1.84 | 2.29 | 2.95 | 3.31 | 5 | 3.83 | 2.07 | 2.26 | 2.89 | 3.8 | 2.44 | 2.5 | 35.19 |