South Bend, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 16.9 °C (high). Annual precipitation averages 817.1 Millimeters. South Bend is located in USDA Plant Hardiness Zone 5b. 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 | -10.2 °C | 0.8 °C | 20.83 mm |
| February | -7.8 °C | 3.6 °C | 26.67 mm |
| March | -2.2 °C | 10.7 °C | 44.2 mm |
| April | 4.1 °C | 17.5 °C | 81.53 mm |
| May | 10.6 °C | 22.9 °C | 126.24 mm |
| June | 16.4 °C | 28.4 °C | 123.19 mm |
| July | 18.9 °C | 30.5 °C | 90.93 mm |
| August | 17.4 °C | 29.6 °C | 96.77 mm |
| September | 11.9 °C | 25.9 °C | 75.69 mm |
| October | 5 °C | 18.9 °C | 63.25 mm |
| November | -2.2 °C | 10.2 °C | 36.83 mm |
| December | -7.7 °C | 3.2 °C | 30.99 mm |
| Annual | 4.5 °C | 16.9 °C | 817.12 mm |
| 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 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |