Kremlin, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.5 °C (low) to 13.3 °C (high). Annual precipitation averages 308.9 Millimeters. Kremlin 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. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.4 °C | -1.9 °C | 12.19 mm |
| February | -12.8 °C | 0.3 °C | 7.37 mm |
| March | -7.6 °C | 6.1 °C | 11.43 mm |
| April | -1.6 °C | 13.4 °C | 26.92 mm |
| May | 3.9 °C | 19 °C | 48.77 mm |
| June | 8.6 °C | 23.5 °C | 67.31 mm |
| July | 11.4 °C | 29.1 °C | 38.1 mm |
| August | 10.5 °C | 28.7 °C | 27.69 mm |
| September | 5.2 °C | 22.3 °C | 27.18 mm |
| October | -1.3 °C | 14.1 °C | 19.3 mm |
| November | -7.5 °C | 5.4 °C | 12.95 mm |
| December | -12.8 °C | -0.3 °C | 9.65 mm |
| Annual | -1.5 °C | 13.3 °C | 308.86 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |