McFarland, California has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 49.8 °F (low) to 76.9 °F (high). Annual precipitation averages 7.6 Inches. McFarland is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.5 °F | 57.0 °F | 1.48 in. |
| February | 40.0 °F | 62.9 °F | 1.43 in. |
| March | 43.8 °F | 68.8 °F | 1.29 in. |
| April | 46.9 °F | 74.4 °F | 0.62 in. |
| May | 53.6 °F | 82.7 °F | 0.31 in. |
| June | 59.6 °F | 91.0 °F | 0.08 in. |
| July | 65.2 °F | 96.3 °F | 0.0 in. |
| August | 63.8 °F | 95.6 °F | 0.0 in. |
| September | 59.2 °F | 90.5 °F | 0.04 in. |
| October | 50.5 °F | 79.9 °F | 0.37 in. |
| November | 41.4 °F | 66.5 °F | 0.68 in. |
| December | 35.6 °F | 56.9 °F | 1.25 in. |
| Annual | 49.8 °F | 76.9 °F | 7.55 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |