Buttonwillow, California has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 50 °F (low) to 77.8 °F (high). Annual precipitation averages 6 Inches. Buttonwillow is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.0 °F | 57.2 °F | 1.18 in. |
| February | 39.9 °F | 63.7 °F | 1.18 in. |
| March | 44.2 °F | 69.7 °F | 1.2 in. |
| April | 47.5 °F | 75.5 °F | 0.4 in. |
| May | 54.7 °F | 84.0 °F | 0.24 in. |
| June | 60.5 °F | 91.9 °F | 0.04 in. |
| July | 66.0 °F | 97.5 °F | 0.0 in. |
| August | 64.4 °F | 96.5 °F | 0.0 in. |
| September | 59.2 °F | 91.5 °F | 0.03 in. |
| October | 50.0 °F | 81.0 °F | 0.27 in. |
| November | 41.1 °F | 67.0 °F | 0.47 in. |
| December | 35.5 °F | 57.6 °F | 0.96 in. |
| Annual | 50 °F | 77.8 °F | 5.97 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BWk - Cold Desert Climate |