McGill, Nevada has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.9 °C (low) to 16.8 °C (high). Annual precipitation averages 223.5 Millimeters. McGill is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10 °C | 4.9 °C | 17.53 mm |
| February | -8.4 °C | 6.3 °C | 18.8 mm |
| March | -4.8 °C | 10.9 °C | 21.84 mm |
| April | -2.1 °C | 14.4 °C | 26.42 mm |
| May | 1.7 °C | 19.7 °C | 25.65 mm |
| June | 6.1 °C | 26.4 °C | 14.73 mm |
| July | 10.4 °C | 31.1 °C | 12.95 mm |
| August | 9.8 °C | 30.3 °C | 14.48 mm |
| September | 4.7 °C | 25.1 °C | 19.56 mm |
| October | -1.2 °C | 17.8 °C | 20.32 mm |
| November | -6.2 °C | 10.3 °C | 14.73 mm |
| December | -10.4 °C | 4.8 °C | 16.51 mm |
| Annual | -0.9 °C | 16.8 °C | 223.52 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |