Rico, Colorado has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 24.8 °F (low) to 55 °F (high). Annual precipitation averages 24.7 Inches. Rico is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 21 - Jun. 30 through the first frost around Aug. 11 - Aug. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.0 °F | 36.7 °F | 2.39 in. |
| February | 9.2 °F | 38.9 °F | 2.4 in. |
| March | 15.7 °F | 45.3 °F | 2.24 in. |
| April | 23.0 °F | 51.2 °F | 1.79 in. |
| May | 30.8 °F | 60.7 °F | 1.56 in. |
| June | 37.6 °F | 71.9 °F | 0.76 in. |
| July | 43.7 °F | 76.0 °F | 2.18 in. |
| August | 43.1 °F | 73.3 °F | 2.76 in. |
| September | 36.2 °F | 67.4 °F | 2.46 in. |
| October | 26.7 °F | 57.2 °F | 2.13 in. |
| November | 16.3 °F | 45.2 °F | 1.94 in. |
| December | 7.7 °F | 36.0 °F | 2.04 in. |
| Annual | 24.8 °F | 55 °F | 24.65 in. |
| Average First Frost Date | Aug. 11 - Aug. 20 |
| Average Last Frost Date | Jun. 21 - Jun. 30 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |