Big Creek, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 5.3 °C (low) to 17.8 °C (high). Annual precipitation averages 874.3 Millimeters. Big Creek is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.4 °C | 10 °C | 167.64 mm |
| February | -0.9 °C | 10.1 °C | 151.64 mm |
| March | 0.2 °C | 11.8 °C | 133.6 mm |
| April | 2 °C | 14 °C | 75.95 mm |
| May | 5.9 °C | 18.6 °C | 49.53 mm |
| June | 10.3 °C | 24.2 °C | 14.22 mm |
| July | 14.1 °C | 28.6 °C | 17.78 mm |
| August | 13.7 °C | 28.6 °C | 2.79 mm |
| September | 11.1 °C | 25.4 °C | 7.37 mm |
| October | 6.6 °C | 19.5 °C | 54.1 mm |
| November | 2.2 °C | 13.6 °C | 66.29 mm |
| December | -0.7 °C | 9.3 °C | 133.35 mm |
| Annual | 5.3 °C | 17.8 °C | 874.26 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |