Valley Ford, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 45.2 °F (low) to 65.9 °F (high). Annual precipitation averages 34.7 Inches. 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 | 40.4 °F | 57.0 °F | 6.38 in. |
| February | 41.0 °F | 59.6 °F | 6.8 in. |
| March | 42.2 °F | 61.3 °F | 4.7 in. |
| April | 43.3 °F | 63.4 °F | 2.24 in. |
| May | 46.2 °F | 66.3 °F | 1.28 in. |
| June | 49.1 °F | 70.5 °F | 0.38 in. |
| July | 50.8 °F | 72.3 °F | 0.05 in. |
| August | 51.4 °F | 73.9 °F | 0.17 in. |
| September | 49.3 °F | 74.5 °F | 0.17 in. |
| October | 46.7 °F | 71.5 °F | 1.59 in. |
| November | 42.8 °F | 63.4 °F | 3.63 in. |
| December | 39.6 °F | 57.1 °F | 7.33 in. |
| Annual | 45.2 °F | 65.9 °F | 34.72 in. |
| 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 : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |