Drytown, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 9.2 °C (low) to 23.8 °C (high). Annual precipitation averages 710.7 Millimeters. Drytown is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.8 °C | 13.3 °C | 130.56 mm |
| February | 4.8 °C | 15.7 °C | 120.9 mm |
| March | 6.3 °C | 18.2 °C | 112.01 mm |
| April | 7.4 °C | 21.2 °C | 62.48 mm |
| May | 10.2 °C | 26.3 °C | 41.15 mm |
| June | 13.2 °C | 31.5 °C | 8.13 mm |
| July | 15.4 °C | 35.3 °C | 0.25 mm |
| August | 15.6 °C | 34.7 °C | 1.27 mm |
| September | 14.1 °C | 31.9 °C | 4.83 mm |
| October | 10.3 °C | 25.8 °C | 33.78 mm |
| November | 6.2 °C | 18.1 °C | 69.09 mm |
| December | 3.6 °C | 13.3 °C | 126.24 mm |
| Annual | 9.2 °C | 23.8 °C | 710.69 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| 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 |