Otis, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 35.9 °F (low) to 63.6 °F (high). Annual precipitation averages 16.8 Inches. Otis is located in USDA Plant Hardiness Zone 5b. 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 | 16.0 °F | 41.3 °F | 0.33 in. |
| February | 17.6 °F | 43.4 °F | 0.42 in. |
| March | 25.4 °F | 53.6 °F | 0.79 in. |
| April | 32.7 °F | 60.9 °F | 1.59 in. |
| May | 43.2 °F | 70.1 °F | 2.77 in. |
| June | 53.5 °F | 82.1 °F | 2.44 in. |
| July | 59.9 °F | 88.6 °F | 2.76 in. |
| August | 57.5 °F | 86.3 °F | 2.4 in. |
| September | 48.7 °F | 78.8 °F | 1.22 in. |
| October | 35.2 °F | 64.7 °F | 1.12 in. |
| November | 24.7 °F | 51.6 °F | 0.52 in. |
| December | 16.2 °F | 41.3 °F | 0.4 in. |
| Annual | 35.9 °F | 63.6 °F | 16.76 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |