Cazadero, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 7.1 °C (low) to 21.8 °C (high). Annual precipitation averages 1416.3 Millimeters. Cazadero is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 11 - Jan. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.4 °C | 14.3 °C | 275.84 mm |
| February | 4.1 °C | 16.2 °C | 278.13 mm |
| March | 5.1 °C | 18.1 °C | 193.04 mm |
| April | 6.1 °C | 20.2 °C | 91.19 mm |
| May | 8.1 °C | 23.4 °C | 60.2 mm |
| June | 10.1 °C | 27.1 °C | 8.38 mm |
| July | 11.2 °C | 28.5 °C | 0.76 mm |
| August | 11.1 °C | 28.7 °C | 2.54 mm |
| September | 9.9 °C | 28.2 °C | 4.83 mm |
| October | 7.8 °C | 24.6 °C | 68.58 mm |
| November | 4.9 °C | 18.4 °C | 139.7 mm |
| December | 3.2 °C | 14.1 °C | 293.12 mm |
| Annual | 7.1 °C | 21.8 °C | 1416.31 mm |
| Average First Frost Date | Jan. 11 - Jan. 20 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°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 |