Mammoth Lakes, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 27.3 °F (low) to 57.5 °F (high). Annual precipitation averages 24.1 Inches. Mammoth Lakes is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.9 °F | 42.0 °F | 4.41 in. |
| February | 15.2 °F | 41.6 °F | 3.75 in. |
| March | 19.1 °F | 46.4 °F | 3.37 in. |
| April | 23.9 °F | 51.7 °F | 1.72 in. |
| May | 30.4 °F | 60.0 °F | 1.44 in. |
| June | 37.6 °F | 70.3 °F | 0.52 in. |
| July | 44.0 °F | 78.1 °F | 0.44 in. |
| August | 42.2 °F | 77.3 °F | 0.29 in. |
| September | 36.4 °F | 70.9 °F | 0.35 in. |
| October | 27.9 °F | 60.5 °F | 1.47 in. |
| November | 20.8 °F | 49.4 °F | 2.12 in. |
| December | 14.8 °F | 41.3 °F | 4.2 in. |
| Annual | 27.3 °F | 57.5 °F | 24.08 in. |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |