Valley Ford, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 7.4 °C (low) to 18.8 °C (high). Annual precipitation averages 881.9 Millimeters. Valley Ford is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.7 °C | 13.9 °C | 162.05 mm |
| February | 5 °C | 15.3 °C | 172.72 mm |
| March | 5.7 °C | 16.3 °C | 119.38 mm |
| April | 6.3 °C | 17.4 °C | 56.9 mm |
| May | 7.9 °C | 19.1 °C | 32.51 mm |
| June | 9.5 °C | 21.4 °C | 9.65 mm |
| July | 10.4 °C | 22.4 °C | 1.27 mm |
| August | 10.8 °C | 23.3 °C | 4.32 mm |
| September | 9.6 °C | 23.6 °C | 4.32 mm |
| October | 8.2 °C | 21.9 °C | 40.39 mm |
| November | 6 °C | 17.4 °C | 92.2 mm |
| December | 4.2 °C | 13.9 °C | 186.18 mm |
| Annual | 7.4 °C | 18.8 °C | 881.89 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |