Froid, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.5 °C (low) to 12.5 °C (high). Annual precipitation averages 365 Millimeters. Froid 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 | -16.7 °C | -5.3 °C | 7.87 mm |
| February | -14.3 °C | -2.4 °C | 6.86 mm |
| March | -8 °C | 4.6 °C | 12.95 mm |
| April | -1.5 °C | 13.1 °C | 23.11 mm |
| May | 4.5 °C | 19.9 °C | 56.9 mm |
| June | 10.2 °C | 24.6 °C | 76.45 mm |
| July | 12.9 °C | 28.9 °C | 66.29 mm |
| August | 11.7 °C | 29 °C | 38.1 mm |
| September | 6.1 °C | 23.1 °C | 29.72 mm |
| October | -0.8 °C | 13.8 °C | 23.11 mm |
| November | -8.1 °C | 4.1 °C | 13.21 mm |
| December | -14.1 °C | -2.9 °C | 10.41 mm |
| Annual | -1.5 °C | 12.5 °C | 364.98 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 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |