Yucaipa, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 49.1 °F (low) to 77.5 °F (high). Annual precipitation averages 15.8 Inches. Yucaipa is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 41.1 °F | 63.2 °F | 3.21 in. |
| February | 40.0 °F | 63.6 °F | 3.86 in. |
| March | 41.7 °F | 67.5 °F | 2.6 in. |
| April | 44.4 °F | 72.6 °F | 0.99 in. |
| May | 48.4 °F | 78.7 °F | 0.61 in. |
| June | 53.8 °F | 87.7 °F | 0.12 in. |
| July | 61.4 °F | 95.0 °F | 0.13 in. |
| August | 61.9 °F | 95.5 °F | 0.11 in. |
| September | 58.7 °F | 91.2 °F | 0.28 in. |
| October | 52.2 °F | 81.1 °F | 0.57 in. |
| November | 44.7 °F | 71.1 °F | 1.03 in. |
| December | 40.4 °F | 62.8 °F | 2.27 in. |
| Annual | 49.1 °F | 77.5 °F | 15.78 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 50-75 Days |
| 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 | Csa - Hot-Summer Mediterranean Climate |