Loma Linda, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 52 °F (low) to 79.3 °F (high). Annual precipitation averages 10.9 Inches. Loma Linda 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 Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.7 °F | 66.9 °F | 2.28 in. |
| February | 43.6 °F | 67.2 °F | 2.72 in. |
| March | 46.3 °F | 70.7 °F | 1.92 in. |
| April | 49.0 °F | 75.0 °F | 0.67 in. |
| May | 53.8 °F | 79.9 °F | 0.29 in. |
| June | 57.8 °F | 87.3 °F | 0.08 in. |
| July | 63.0 °F | 94.3 °F | 0.05 in. |
| August | 63.8 °F | 95.5 °F | 0.05 in. |
| September | 61.1 °F | 92.0 °F | 0.12 in. |
| October | 54.4 °F | 82.4 °F | 0.42 in. |
| November | 47.0 °F | 73.9 °F | 0.62 in. |
| December | 41.8 °F | 66.2 °F | 1.65 in. |
| Annual | 52 °F | 79.3 °F | 10.87 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |