Goodyears Bar, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.2 °C (low) to 20.7 °C (high). Annual precipitation averages 1543.6 Millimeters. Goodyears Bar is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.1 °C | 10.3 °C | 274.83 mm |
| February | 0.5 °C | 12.6 °C | 254.76 mm |
| March | 1.6 °C | 15.2 °C | 234.19 mm |
| April | 3.1 °C | 17.9 °C | 128.78 mm |
| May | 6.5 °C | 22.8 °C | 88.65 mm |
| June | 9.4 °C | 27.8 °C | 23.11 mm |
| July | 12.6 °C | 32.3 °C | 1.78 mm |
| August | 11.9 °C | 32.4 °C | 4.57 mm |
| September | 9.3 °C | 29.4 °C | 14.99 mm |
| October | 5.3 °C | 23.3 °C | 74.42 mm |
| November | 1.8 °C | 14.7 °C | 151.89 mm |
| December | -0.1 °C | 9.6 °C | 291.59 mm |
| Annual | 5.2 °C | 20.7 °C | 1543.56 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |