Inman, 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 15.7 °C (high). Annual precipitation averages 676.4 Millimeters. Inman is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.2 °C | 0.6 °C | 13.72 mm |
| February | -9.4 °C | 2.8 °C | 17.78 mm |
| March | -4.3 °C | 9 °C | 35.05 mm |
| April | 1.7 °C | 15.1 °C | 77.22 mm |
| May | 7.9 °C | 21.2 °C | 102.62 mm |
| June | 14 °C | 27.1 °C | 100.08 mm |
| July | 16.8 °C | 30.4 °C | 80.26 mm |
| August | 15.5 °C | 29.1 °C | 86.61 mm |
| September | 10.2 °C | 25 °C | 60.71 mm |
| October | 2.8 °C | 17.2 °C | 59.18 mm |
| November | -4.3 °C | 8.8 °C | 24.89 mm |
| December | -9.5 °C | 1.9 °C | 18.29 mm |
| Annual | 2.5 °C | 15.7 °C | 676.41 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |