Clear Creek, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 0.5 °C (low) to 15.9 °C (high). Annual precipitation averages 1023.1 Millimeters. Clear Creek 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6 °C | 5.5 °C | 187.2 mm |
| February | -5.3 °C | 7.2 °C | 160.78 mm |
| March | -3.4 °C | 10.1 °C | 158.5 mm |
| April | -1.2 °C | 12.6 °C | 85.09 mm |
| May | 2.4 °C | 17.9 °C | 52.58 mm |
| June | 5.7 °C | 23.4 °C | 23.62 mm |
| July | 8.8 °C | 28.6 °C | 8.13 mm |
| August | 7.8 °C | 28.1 °C | 7.11 mm |
| September | 4.7 °C | 24.7 °C | 10.41 mm |
| October | 0.6 °C | 17.6 °C | 51.31 mm |
| November | -2.9 °C | 9.8 °C | 100.84 mm |
| December | -5.8 °C | 4.9 °C | 177.55 mm |
| Annual | 0.5 °C | 15.9 °C | 1023.12 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |