Genoa, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.7 °F (low) to 62.7 °F (high). Annual precipitation averages 16.4 Inches. Genoa is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.0 °F | 42.5 °F | 0.27 in. |
| February | 16.9 °F | 43.6 °F | 0.4 in. |
| March | 24.2 °F | 53.2 °F | 0.66 in. |
| April | 30.4 °F | 59.5 °F | 1.39 in. |
| May | 40.6 °F | 69.0 °F | 2.43 in. |
| June | 50.9 °F | 80.8 °F | 2.6 in. |
| July | 56.4 °F | 86.4 °F | 3.08 in. |
| August | 54.8 °F | 83.9 °F | 3.04 in. |
| September | 46.1 °F | 76.7 °F | 0.99 in. |
| October | 32.7 °F | 63.5 °F | 0.93 in. |
| November | 21.8 °F | 51.2 °F | 0.38 in. |
| December | 14.6 °F | 41.8 °F | 0.23 in. |
| Annual | 33.7 °F | 62.7 °F | 16.4 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 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 | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |