Loma Linda, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 11.1 °C (low) to 26.3 °C (high). Annual precipitation averages 276.1 Millimeters. 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 | 5.9 °C | 19.4 °C | 57.91 mm |
| February | 6.4 °C | 19.6 °C | 69.09 mm |
| March | 7.9 °C | 21.5 °C | 48.77 mm |
| April | 9.4 °C | 23.9 °C | 17.02 mm |
| May | 12.1 °C | 26.6 °C | 7.37 mm |
| June | 14.3 °C | 30.7 °C | 2.03 mm |
| July | 17.2 °C | 34.6 °C | 1.27 mm |
| August | 17.7 °C | 35.3 °C | 1.27 mm |
| September | 16.2 °C | 33.3 °C | 3.05 mm |
| October | 12.4 °C | 28 °C | 10.67 mm |
| November | 8.3 °C | 23.3 °C | 15.75 mm |
| December | 5.4 °C | 19 °C | 41.91 mm |
| Annual | 11.1 °C | 26.3 °C | 276.11 mm |
| 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 : -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 | BSk - Cold Semi-Arid Climate |