Laredo, Texas has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 63.6 °F (low) to 86.2 °F (high). Annual precipitation averages 19.5 Inches. Laredo is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 46.5 °F | 68.9 °F | 0.81 in. |
| February | 50.8 °F | 73.9 °F | 0.68 in. |
| March | 57.7 °F | 80.8 °F | 1.52 in. |
| April | 63.9 °F | 88.3 °F | 1.36 in. |
| May | 71.2 °F | 94.0 °F | 2.73 in. |
| June | 76.2 °F | 99.2 °F | 1.78 in. |
| July | 77.0 °F | 100.5 °F | 1.67 in. |
| August | 77.5 °F | 101.0 °F | 1.41 in. |
| September | 73.2 °F | 94.2 °F | 3.78 in. |
| October | 65.6 °F | 87.3 °F | 1.71 in. |
| November | 55.3 °F | 77.1 °F | 1.12 in. |
| December | 48.0 °F | 69.6 °F | 0.91 in. |
| Annual | 63.6 °F | 86.2 °F | 19.48 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 | BSh - Hot Semi-Arid Climate |