Outlook, Montana has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 28 °F (low) to 52.1 °F (high). Annual precipitation averages 15.4 Inches. Outlook 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 | 0.6 °F | 20.6 °F | 0.43 in. |
| February | 4.9 °F | 25.2 °F | 0.31 in. |
| March | 15.9 °F | 37.0 °F | 0.58 in. |
| April | 28.0 °F | 53.7 °F | 1.18 in. |
| May | 38.8 °F | 65.3 °F | 2.06 in. |
| June | 48.8 °F | 73.6 °F | 3.43 in. |
| July | 53.5 °F | 80.9 °F | 2.68 in. |
| August | 51.5 °F | 81.5 °F | 1.59 in. |
| September | 42.0 °F | 71.1 °F | 1.21 in. |
| October | 29.7 °F | 54.7 °F | 0.97 in. |
| November | 16.6 °F | 36.7 °F | 0.52 in. |
| December | 5.6 °F | 24.6 °F | 0.47 in. |
| Annual | 28 °F | 52.1 °F | 15.43 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |