Fellows, California has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 10.8 °C (low) to 25.2 °C (high). Annual precipitation averages 173.5 Millimeters. Fellows is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.1 °C | 14.7 °C | 30.73 mm |
| February | 5.7 °C | 16.6 °C | 40.89 mm |
| March | 7.4 °C | 19.6 °C | 30.99 mm |
| April | 8.7 °C | 23.7 °C | 13.46 mm |
| May | 11.9 °C | 28.3 °C | 8.64 mm |
| June | 15.4 °C | 33.1 °C | 1.78 mm |
| July | 19.1 °C | 36.7 °C | 0.51 mm |
| August | 18.5 °C | 36.1 °C | 0.25 mm |
| September | 16 °C | 33.1 °C | 1.27 mm |
| October | 11.5 °C | 26.7 °C | 7.11 mm |
| November | 6.9 °C | 19.2 °C | 12.95 mm |
| December | 4 °C | 14.6 °C | 24.89 mm |
| Annual | 10.8 °C | 25.2 °C | 173.47 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 20-30 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 | Normal |
| Köppen Climate Classification | BWk - Cold Desert Climate |