Coffee Creek, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -0.5 °C (low) to 14.2 °C (high). Annual precipitation averages 395.2 Millimeters. Coffee Creek is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.8 °C | 2.1 °C | 11.43 mm |
| February | -9.8 °C | 3.1 °C | 11.68 mm |
| March | -5.9 °C | 7.9 °C | 17.27 mm |
| April | -1.3 °C | 12.9 °C | 40.64 mm |
| May | 3.6 °C | 18.1 °C | 67.31 mm |
| June | 7.8 °C | 22.7 °C | 76.71 mm |
| July | 10.9 °C | 28.4 °C | 40.89 mm |
| August | 10.1 °C | 28.3 °C | 36.32 mm |
| September | 5.3 °C | 22.4 °C | 35.05 mm |
| October | -0.4 °C | 14.7 °C | 29.21 mm |
| November | -5.9 °C | 7.2 °C | 16 mm |
| December | -10.1 °C | 2.4 °C | 12.7 mm |
| Annual | -0.5 °C | 14.2 °C | 395.21 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |