Winterhaven, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 59.1 °F (low) to 88.1 °F (high). Annual precipitation averages 3.3 Inches. Winterhaven is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 43.6 °F | 69.8 °F | 0.43 in. |
| February | 45.8 °F | 73.2 °F | 0.42 in. |
| March | 50.4 °F | 79.8 °F | 0.34 in. |
| April | 55.3 °F | 85.8 °F | 0.13 in. |
| May | 61.6 °F | 93.5 °F | 0.05 in. |
| June | 69.3 °F | 102.7 °F | 0.03 in. |
| July | 78.0 °F | 106.5 °F | 0.25 in. |
| August | 79.1 °F | 106.3 °F | 0.36 in. |
| September | 73.1 °F | 101.8 °F | 0.4 in. |
| October | 60.9 °F | 91.0 °F | 0.2 in. |
| November | 49.8 °F | 78.2 °F | 0.21 in. |
| December | 42.6 °F | 68.0 °F | 0.48 in. |
| Annual | 59.1 °F | 88.1 °F | 3.3 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWh - Hot Desert Climate |