Manassa, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 25.3 °F (low) to 59 °F (high). Annual precipitation averages 7.7 Inches. Manassa is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °F | 34.5 °F | 0.21 in. |
| February | 8.9 °F | 40.4 °F | 0.21 in. |
| March | 18.2 °F | 51.1 °F | 0.43 in. |
| April | 25.0 °F | 58.7 °F | 0.52 in. |
| May | 34.0 °F | 67.5 °F | 0.65 in. |
| June | 41.2 °F | 77.5 °F | 0.39 in. |
| July | 47.3 °F | 80.4 °F | 1.21 in. |
| August | 45.4 °F | 78.3 °F | 1.48 in. |
| September | 38.0 °F | 73.1 °F | 1.09 in. |
| October | 26.2 °F | 62.4 °F | 0.7 in. |
| November | 14.5 °F | 48.7 °F | 0.46 in. |
| December | 3.4 °F | 35.8 °F | 0.33 in. |
| Annual | 25.3 °F | 59 °F | 7.68 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |