Antelope, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 28 °F (low) to 53.1 °F (high). Annual precipitation averages 14.6 Inches. Antelope is located in USDA Plant Hardiness Zone 3b. 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 | -0.3 °F | 21.1 °F | 0.4 in. |
| February | 4.5 °F | 26.3 °F | 0.34 in. |
| March | 15.9 °F | 38.2 °F | 0.6 in. |
| April | 28.0 °F | 54.7 °F | 1.01 in. |
| May | 39.3 °F | 66.8 °F | 1.91 in. |
| June | 49.6 °F | 75.0 °F | 3.16 in. |
| July | 54.1 °F | 82.3 °F | 2.6 in. |
| August | 52.0 °F | 82.8 °F | 1.45 in. |
| September | 41.7 °F | 71.8 °F | 1.24 in. |
| October | 29.3 °F | 55.2 °F | 0.92 in. |
| November | 16.3 °F | 37.6 °F | 0.53 in. |
| December | 5.2 °F | 25.4 °F | 0.47 in. |
| Annual | 28 °F | 53.1 °F | 14.63 in. |
| 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 3b : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |