Wrightwood, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 4.5 °C (low) to 18.2 °C (high). Annual precipitation averages 465.3 Millimeters. Wrightwood is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.6 °C | 9.7 °C | 92.71 mm |
| February | -1.8 °C | 10.1 °C | 127 mm |
| March | -0.1 °C | 13.2 °C | 60.45 mm |
| April | 1.6 °C | 15.8 °C | 28.96 mm |
| May | 5.1 °C | 20.6 °C | 9.4 mm |
| June | 9.3 °C | 26.1 °C | 3.56 mm |
| July | 13.3 °C | 28.8 °C | 8.13 mm |
| August | 13 °C | 28.1 °C | 7.62 mm |
| September | 10 °C | 24.5 °C | 10.92 mm |
| October | 5.3 °C | 18.6 °C | 14.22 mm |
| November | 1.2 °C | 13.6 °C | 22.61 mm |
| December | -1.9 °C | 9.3 °C | 79.76 mm |
| Annual | 4.5 °C | 18.2 °C | 465.34 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |