Glendive, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 32.8 °F (low) to 58.3 °F (high). Annual precipitation averages 14.5 Inches. Glendive 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 | 7.0 °F | 28.8 °F | 0.28 in. |
| February | 10.5 °F | 33.5 °F | 0.32 in. |
| March | 21.2 °F | 45.6 °F | 0.53 in. |
| April | 32.2 °F | 58.2 °F | 1.35 in. |
| May | 43.0 °F | 68.5 °F | 2.68 in. |
| June | 52.7 °F | 78.1 °F | 2.47 in. |
| July | 58.6 °F | 87.8 °F | 2.27 in. |
| August | 56.1 °F | 87.1 °F | 1.48 in. |
| September | 46.0 °F | 76.4 °F | 1.26 in. |
| October | 34.4 °F | 59.9 °F | 1.06 in. |
| November | 21.4 °F | 44.1 °F | 0.42 in. |
| December | 10.8 °F | 32.1 °F | 0.39 in. |
| Annual | 32.8 °F | 58.3 °F | 14.51 in. |
| 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 : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |