Sangrey, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from -1.2 °C (low) to 13.2 °C (high). Annual precipitation averages 378.7 Millimeters. Sangrey is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.1 °C | 0.1 °C | 14.22 mm |
| February | -11.2 °C | 1.5 °C | 11.18 mm |
| March | -6.8 °C | 6.4 °C | 12.95 mm |
| April | -1.8 °C | 12.3 °C | 30.99 mm |
| May | 3.1 °C | 17.8 °C | 59.94 mm |
| June | 7.3 °C | 22.3 °C | 88.9 mm |
| July | 10.5 °C | 28.4 °C | 37.85 mm |
| August | 9.3 °C | 27.6 °C | 29.97 mm |
| September | 4.9 °C | 21.4 °C | 36.58 mm |
| October | -0.9 °C | 13.4 °C | 25.4 mm |
| November | -6.1 °C | 5.9 °C | 19.56 mm |
| December | -10.5 °C | 0.9 °C | 11.18 mm |
| Annual | -1.2 °C | 13.2 °C | 378.72 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |