| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F | |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F | |
| Average First Frost Date: | Frost Rare | |
| Average Last Frost Date: | Frost Rare | |
| 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 77480 - Sweeny, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 44 | 47 | 53 | 60 | 67 | 73 | 75 | 74 | 70 | 61 | 52 | 45 | 60 |
| Avg Max Temp (°F) | 63 | 66 | 73 | 78 | 84 | 89 | 92 | 93 | 89 | 82 | 73 | 65 | 79 |
| Avg Precip (In.) | 3.99 | 2.94 | 3.08 | 3.16 | 4.79 | 5.16 | 3.87 | 3.99 | 6.31 | 4.5 | 4.26 | 3.47 | 49.52 |