Brawley, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 58.1 °F (low) to 87.6 °F (high). Annual precipitation averages 2.5 Inches. Brawley is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 41.8 °F | 69.6 °F | 0.44 in. |
| February | 44.8 °F | 73.1 °F | 0.49 in. |
| March | 49.8 °F | 79.0 °F | 0.31 in. |
| April | 54.8 °F | 85.2 °F | 0.09 in. |
| May | 61.4 °F | 92.8 °F | 0.04 in. |
| June | 68.2 °F | 101.8 °F | 0.0 in. |
| July | 76.6 °F | 106.0 °F | 0.08 in. |
| August | 77.8 °F | 105.8 °F | 0.15 in. |
| September | 71.5 °F | 101.2 °F | 0.18 in. |
| October | 60.2 °F | 90.6 °F | 0.13 in. |
| November | 48.5 °F | 78.0 °F | 0.14 in. |
| December | 41.4 °F | 68.3 °F | 0.43 in. |
| Annual | 58.1 °F | 87.6 °F | 2.48 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 9b : 25°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWh - Hot Desert Climate |