Superior, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.2 °F (low) to 64.5 °F (high). Annual precipitation averages 27.6 Inches. Superior is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.5 °F | 37.3 °F | 0.66 in. |
| February | 19.0 °F | 42.2 °F | 0.76 in. |
| March | 28.2 °F | 53.7 °F | 1.48 in. |
| April | 38.5 °F | 64.5 °F | 2.45 in. |
| May | 50.0 °F | 74.3 °F | 4.47 in. |
| June | 61.0 °F | 84.8 °F | 3.85 in. |
| July | 65.5 °F | 89.4 °F | 4.06 in. |
| August | 63.3 °F | 87.1 °F | 3.36 in. |
| September | 53.6 °F | 80.1 °F | 2.29 in. |
| October | 40.9 °F | 67.5 °F | 2.02 in. |
| November | 28.1 °F | 52.4 °F | 1.25 in. |
| December | 18.8 °F | 40.3 °F | 0.94 in. |
| Annual | 40.2 °F | 64.5 °F | 27.59 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |