Big Bear Lake, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 33.8 °F (low) to 62.5 °F (high). Annual precipitation averages 21.7 Inches. 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 | 23.2 °F | 48.1 °F | 5.25 in. |
| February | 23.0 °F | 47.8 °F | 4.43 in. |
| March | 25.9 °F | 52.1 °F | 2.88 in. |
| April | 29.7 °F | 57.9 °F | 1.06 in. |
| May | 35.7 °F | 66.0 °F | 0.43 in. |
| June | 42.3 °F | 75.3 °F | 0.15 in. |
| July | 49.0 °F | 80.4 °F | 0.55 in. |
| August | 48.7 °F | 79.7 °F | 0.73 in. |
| September | 43.1 °F | 74.3 °F | 0.46 in. |
| October | 34.4 °F | 65.2 °F | 0.88 in. |
| November | 27.2 °F | 55.0 °F | 1.37 in. |
| December | 22.8 °F | 47.7 °F | 3.49 in. |
| Annual | 33.8 °F | 62.5 °F | 21.68 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |