| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°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: | 34a - Northern Humid Gulf Coastal Prairies | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 77979 - Port Lavaca, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 44 | 48 | 55 | 62 | 69 | 74 | 76 | 76 | 72 | 64 | 54 | 47 | 62 |
| Avg Max Temp (°F) | 63 | 67 | 74 | 79 | 85 | 90 | 92 | 93 | 89 | 83 | 73 | 67 | 80 |
| Avg Precip (In.) | 2.85 | 2.45 | 2.55 | 2.83 | 4.57 | 4.64 | 3.33 | 3.32 | 5.61 | 4.5 | 3.67 | 2.77 | 43.1 |