Big Bear Lake, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 1 °C (low) to 16.9 °C (high). Annual precipitation averages 550.7 Millimeters. Big Bear Lake is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.9 °C | 8.9 °C | 133.35 mm |
| February | -5 °C | 8.8 °C | 112.52 mm |
| March | -3.4 °C | 11.2 °C | 73.15 mm |
| April | -1.3 °C | 14.4 °C | 26.92 mm |
| May | 2.1 °C | 18.9 °C | 10.92 mm |
| June | 5.7 °C | 24.1 °C | 3.81 mm |
| July | 9.4 °C | 26.9 °C | 13.97 mm |
| August | 9.3 °C | 26.5 °C | 18.54 mm |
| September | 6.2 °C | 23.5 °C | 11.68 mm |
| October | 1.3 °C | 18.4 °C | 22.35 mm |
| November | -2.7 °C | 12.8 °C | 34.8 mm |
| December | -5.1 °C | 8.7 °C | 88.65 mm |
| Annual | 1 °C | 16.9 °C | 550.66 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |