Superior, Colorado has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 37.7 °F (low) to 64.7 °F (high). Annual precipitation averages 17.7 Inches. Superior is located in USDA Plant Hardiness Zone 6a. 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 | 20.6 °F | 46.0 °F | 0.53 in. |
| February | 21.5 °F | 46.7 °F | 0.68 in. |
| March | 28.6 °F | 55.3 °F | 1.59 in. |
| April | 34.6 °F | 61.0 °F | 2.78 in. |
| May | 43.5 °F | 69.6 °F | 2.77 in. |
| June | 52.8 °F | 81.9 °F | 1.65 in. |
| July | 59.0 °F | 88.1 °F | 1.72 in. |
| August | 57.1 °F | 85.9 °F | 1.33 in. |
| September | 49.0 °F | 78.1 °F | 1.77 in. |
| October | 37.3 °F | 65.2 °F | 1.28 in. |
| November | 27.8 °F | 53.6 °F | 0.86 in. |
| December | 20.5 °F | 45.3 °F | 0.73 in. |
| Annual | 37.7 °F | 64.7 °F | 17.69 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |