Mammoth Lakes, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from -2.6 °C (low) to 14.2 °C (high). Annual precipitation averages 611.7 Millimeters. 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 | -9.5 °C | 5.6 °C | 112.01 mm |
| February | -9.3 °C | 5.3 °C | 95.25 mm |
| March | -7.2 °C | 8 °C | 85.6 mm |
| April | -4.5 °C | 10.9 °C | 43.69 mm |
| May | -0.9 °C | 15.6 °C | 36.58 mm |
| June | 3.1 °C | 21.3 °C | 13.21 mm |
| July | 6.7 °C | 25.6 °C | 11.18 mm |
| August | 5.7 °C | 25.2 °C | 7.37 mm |
| September | 2.4 °C | 21.6 °C | 8.89 mm |
| October | -2.3 °C | 15.8 °C | 37.34 mm |
| November | -6.2 °C | 9.7 °C | 53.85 mm |
| December | -9.6 °C | 5.2 °C | 106.68 mm |
| Annual | -2.6 °C | 14.2 °C | 611.65 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |