Republican City, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.8 °C (low) to 18.1 °C (high). Annual precipitation averages 627.1 Millimeters. Republican City 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 | -9.7 °C | 3.5 °C | 11.18 mm |
| February | -8 °C | 5.8 °C | 16.26 mm |
| March | -2.8 °C | 12.2 °C | 34.54 mm |
| April | 2.7 °C | 17.8 °C | 57.4 mm |
| May | 9.2 °C | 23.2 °C | 104.65 mm |
| June | 15.3 °C | 29.3 °C | 91.44 mm |
| July | 18.2 °C | 32.1 °C | 101.09 mm |
| August | 16.8 °C | 30.7 °C | 79.25 mm |
| September | 11.4 °C | 26.8 °C | 43.43 mm |
| October | 3.7 °C | 19.5 °C | 46.74 mm |
| November | -3.3 °C | 11.6 °C | 23.11 mm |
| December | -8.2 °C | 4.8 °C | 18.03 mm |
| Annual | 3.8 °C | 18.1 °C | 627.12 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |