Arapahoe, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.2 °C (low) to 18.4 °C (high). Annual precipitation averages 600.4 Millimeters. Arapahoe is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | 4.2 °C | 11.18 mm |
| February | -8.2 °C | 6.3 °C | 16.76 mm |
| March | -3.3 °C | 12.7 °C | 30.99 mm |
| April | 2.1 °C | 18.1 °C | 58.67 mm |
| May | 8.5 °C | 23.3 °C | 91.69 mm |
| June | 14.7 °C | 29.4 °C | 87.88 mm |
| July | 17.5 °C | 32 °C | 94.49 mm |
| August | 16.1 °C | 30.7 °C | 78.74 mm |
| September | 10.6 °C | 27.1 °C | 44.7 mm |
| October | 2.8 °C | 19.8 °C | 47.24 mm |
| November | -4.1 °C | 11.7 °C | 22.35 mm |
| December | -8.7 °C | 5.2 °C | 15.75 mm |
| Annual | 3.2 °C | 18.4 °C | 600.44 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |