Mount Laguna, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 41.1 °F (low) to 65.9 °F (high). Annual precipitation averages 19.2 Inches. Mount Laguna is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.7 °F | 51.1 °F | 3.64 in. |
| February | 30.7 °F | 50.6 °F | 4.64 in. |
| March | 33.4 °F | 55.2 °F | 2.82 in. |
| April | 36.1 °F | 61.6 °F | 1.2 in. |
| May | 41.1 °F | 69.0 °F | 0.5 in. |
| June | 48.7 °F | 79.1 °F | 0.03 in. |
| July | 54.9 °F | 84.4 °F | 0.58 in. |
| August | 55.6 °F | 83.7 °F | 0.69 in. |
| September | 50.2 °F | 78.6 °F | 0.58 in. |
| October | 42.7 °F | 69.0 °F | 0.64 in. |
| November | 35.9 °F | 58.0 °F | 1.26 in. |
| December | 31.6 °F | 50.8 °F | 2.61 in. |
| Annual | 41.1 °F | 65.9 °F | 19.19 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |