Roscoe, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.5 °C (low) to 17.6 °C (high). Annual precipitation averages 498.9 Millimeters. Roscoe 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 | -9.2 °C | 4.3 °C | 8.89 mm |
| February | -8 °C | 5.8 °C | 13.46 mm |
| March | -3.7 °C | 11.8 °C | 25.65 mm |
| April | 1.1 °C | 16.3 °C | 55.63 mm |
| May | 7 °C | 21.8 °C | 85.34 mm |
| June | 13.1 °C | 28.3 °C | 84.33 mm |
| July | 16.2 °C | 31.7 °C | 73.91 mm |
| August | 15 °C | 30.6 °C | 55.63 mm |
| September | 9.6 °C | 26.2 °C | 38.61 mm |
| October | 2.1 °C | 18.3 °C | 35.05 mm |
| November | -4.5 °C | 10.8 °C | 13.21 mm |
| December | -9.1 °C | 4.8 °C | 9.14 mm |
| Annual | 2.5 °C | 17.6 °C | 498.85 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 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 |