Refugio, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 61.2 °F (low) to 81.3 °F (high). Annual precipitation averages 36.6 Inches. Refugio is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 44.8 °F | 66.0 °F | 2.05 in. |
| February | 48.4 °F | 69.5 °F | 1.92 in. |
| March | 54.8 °F | 74.7 °F | 3.12 in. |
| April | 60.9 °F | 80.5 °F | 2.25 in. |
| May | 68.7 °F | 86.6 °F | 3.26 in. |
| June | 73.8 °F | 91.7 °F | 3.52 in. |
| July | 74.9 °F | 93.5 °F | 3.62 in. |
| August | 74.8 °F | 95.1 °F | 2.81 in. |
| September | 71.0 °F | 90.8 °F | 5.63 in. |
| October | 62.4 °F | 84.3 °F | 3.76 in. |
| November | 53.2 °F | 75.0 °F | 2.43 in. |
| December | 46.3 °F | 68.0 °F | 2.18 in. |
| Annual | 61.2 °F | 81.3 °F | 36.55 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |