Fallon, Nevada has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 2.9 °C (low) to 20.5 °C (high). Annual precipitation averages 132.8 Millimeters. Fallon is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.8 °C | 7.8 °C | 18.03 mm |
| February | -4.1 °C | 10.9 °C | 15.49 mm |
| March | -1.2 °C | 15.6 °C | 12.95 mm |
| April | 1.6 °C | 18.8 °C | 11.94 mm |
| May | 6.2 °C | 23.7 °C | 17.02 mm |
| June | 10.2 °C | 29.6 °C | 11.18 mm |
| July | 14.2 °C | 34.9 °C | 2.29 mm |
| August | 12.8 °C | 33.9 °C | 2.03 mm |
| September | 8.2 °C | 29.1 °C | 4.06 mm |
| October | 2.3 °C | 21.4 °C | 10.16 mm |
| November | -3.1 °C | 13.4 °C | 16 mm |
| December | -6.5 °C | 7.3 °C | 11.68 mm |
| Annual | 2.9 °C | 20.5 °C | 132.83 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWk - Cold Desert Climate |