Dunnigan, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 9 °C (low) to 23.7 °C (high). Annual precipitation averages 511.8 Millimeters. Dunnigan is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.7 °C | 13.1 °C | 109.47 mm |
| February | 5 °C | 16 °C | 111 mm |
| March | 6.3 °C | 19 °C | 69.09 mm |
| April | 7.7 °C | 22.1 °C | 29.46 mm |
| May | 10.9 °C | 26.8 °C | 17.02 mm |
| June | 13.8 °C | 30.7 °C | 3.81 mm |
| July | 14.9 °C | 33.7 °C | 0.25 mm |
| August | 14.3 °C | 33.6 °C | 1.27 mm |
| September | 13 °C | 31.6 °C | 2.79 mm |
| October | 9.7 °C | 25.9 °C | 20.07 mm |
| November | 5.6 °C | 18.3 °C | 48.51 mm |
| December | 3.3 °C | 13.2 °C | 99.06 mm |
| Annual | 9 °C | 23.7 °C | 511.8 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 10-20 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 | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |