Rancho Mirage, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 15 °C (low) to 30.5 °C (high). Annual precipitation averages 96 Millimeters. Rancho Mirage is located in USDA Plant Hardiness Zone 10a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.5 °C | 21 °C | 26.16 mm |
| February | 8.2 °C | 22.5 °C | 22.86 mm |
| March | 11.1 °C | 25.8 °C | 13.46 mm |
| April | 13.4 °C | 29.3 °C | 1.78 mm |
| May | 17.1 °C | 33.3 °C | 0.51 mm |
| June | 21.1 °C | 37.9 °C | 0.25 mm |
| July | 24.7 °C | 40.4 °C | 2.54 mm |
| August | 24.9 °C | 40.5 °C | 3.56 mm |
| September | 21.8 °C | 37.6 °C | 4.06 mm |
| October | 16 °C | 32.1 °C | 3.05 mm |
| November | 9.7 °C | 25.6 °C | 4.57 mm |
| December | 5.7 °C | 20.3 °C | 13.21 mm |
| Annual | 15 °C | 30.5 °C | 96.01 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BWh - Hot Desert Climate |