Montrose, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34.7 °F (low) to 63.8 °F (high). Annual precipitation averages 10.3 Inches. Montrose is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.0 °F | 38.8 °F | 0.68 in. |
| February | 20.2 °F | 44.8 °F | 0.66 in. |
| March | 27.1 °F | 55.2 °F | 0.69 in. |
| April | 32.9 °F | 62.4 °F | 0.92 in. |
| May | 41.3 °F | 72.0 °F | 0.9 in. |
| June | 49.8 °F | 84.3 °F | 0.48 in. |
| July | 55.9 °F | 88.5 °F | 1.0 in. |
| August | 54.0 °F | 85.5 °F | 1.18 in. |
| September | 45.8 °F | 78.1 °F | 1.36 in. |
| October | 34.5 °F | 65.2 °F | 1.06 in. |
| November | 24.2 °F | 51.5 °F | 0.69 in. |
| December | 15.2 °F | 38.8 °F | 0.68 in. |
| Annual | 34.7 °F | 63.8 °F | 10.3 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |