Ashland, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 32.6 °F (low) to 60.7 °F (high). Annual precipitation averages 15.8 Inches. Ashland is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.4 °F | 34.7 °F | 0.56 in. |
| February | 13.6 °F | 38.3 °F | 0.65 in. |
| March | 22.7 °F | 49.2 °F | 0.94 in. |
| April | 31.7 °F | 59.3 °F | 1.67 in. |
| May | 41.1 °F | 68.6 °F | 2.98 in. |
| June | 50.3 °F | 79.1 °F | 2.67 in. |
| July | 56.6 °F | 89.2 °F | 1.57 in. |
| August | 54.1 °F | 88.4 °F | 0.98 in. |
| September | 44.3 °F | 77.6 °F | 1.28 in. |
| October | 32.6 °F | 61.4 °F | 1.36 in. |
| November | 21.5 °F | 46.8 °F | 0.61 in. |
| December | 12.2 °F | 36.0 °F | 0.51 in. |
| Annual | 32.6 °F | 60.7 °F | 15.78 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |