Coffee Creek, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.1 °C (low) to 20.4 °C (high). Annual precipitation averages 1362 Millimeters. Coffee Creek is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.6 °C | 8 °C | 241.81 mm |
| February | -0.1 °C | 11.1 °C | 228.35 mm |
| March | 1.3 °C | 14.4 °C | 178.82 mm |
| April | 2.9 °C | 18.3 °C | 104.9 mm |
| May | 6.5 °C | 23.7 °C | 69.34 mm |
| June | 9.8 °C | 28.8 °C | 43.18 mm |
| July | 13.3 °C | 34.3 °C | 12.95 mm |
| August | 12.4 °C | 34.1 °C | 8.64 mm |
| September | 9.3 °C | 30.2 °C | 12.7 mm |
| October | 4.9 °C | 21.9 °C | 66.55 mm |
| November | 1.7 °C | 12.5 °C | 139.45 mm |
| December | -0.6 °C | 7.3 °C | 255.27 mm |
| Annual | 5.1 °C | 20.4 °C | 1361.96 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |