Laytonville, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 41.1 °F (low) to 71.4 °F (high). Annual precipitation averages 61.8 Inches. Laytonville is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.3 °F | 54.8 °F | 11.67 in. |
| February | 34.4 °F | 57.4 °F | 9.63 in. |
| March | 35.8 °F | 60.8 °F | 8.39 in. |
| April | 37.9 °F | 66.0 °F | 4.48 in. |
| May | 42.1 °F | 73.9 °F | 1.91 in. |
| June | 47.6 °F | 83.0 °F | 0.8 in. |
| July | 51.4 °F | 91.7 °F | 0.04 in. |
| August | 50.4 °F | 91.7 °F | 0.07 in. |
| September | 47.3 °F | 87.2 °F | 0.4 in. |
| October | 41.4 °F | 75.6 °F | 3.32 in. |
| November | 37.1 °F | 61.3 °F | 6.57 in. |
| December | 33.5 °F | 53.5 °F | 14.53 in. |
| Annual | 41.1 °F | 71.4 °F | 61.81 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |