Kevin, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.1 °C (low) to 13.1 °C (high). Annual precipitation averages 311.7 Millimeters. Kevin is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.6 °C | -0.3 °C | 10.67 mm |
| February | -11.3 °C | 1.3 °C | 10.16 mm |
| March | -6.8 °C | 6.3 °C | 14.48 mm |
| April | -1.5 °C | 12.7 °C | 30.73 mm |
| May | 3.7 °C | 18.1 °C | 45.47 mm |
| June | 8.2 °C | 22.3 °C | 75.44 mm |
| July | 10.9 °C | 27.8 °C | 27.43 mm |
| August | 10 °C | 27.5 °C | 27.18 mm |
| September | 5.4 °C | 21.6 °C | 28.19 mm |
| October | -0.6 °C | 13.9 °C | 18.8 mm |
| November | -6.7 °C | 5.8 °C | 13.21 mm |
| December | -11.7 °C | 0.3 °C | 9.91 mm |
| Annual | -1.1 °C | 13.1 °C | 311.67 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |