Broken Bow, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.8 °F (low) to 61.4 °F (high). Annual precipitation averages 23.7 Inches. Broken Bow 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 | 12.7 °F | 36.5 °F | 0.36 in. |
| February | 15.5 °F | 39.7 °F | 0.52 in. |
| March | 24.3 °F | 50.8 °F | 1.32 in. |
| April | 33.8 °F | 60.1 °F | 2.55 in. |
| May | 45.2 °F | 69.9 °F | 4.06 in. |
| June | 56.5 °F | 80.6 °F | 3.68 in. |
| July | 61.4 °F | 86.1 °F | 3.23 in. |
| August | 58.8 °F | 84.0 °F | 2.71 in. |
| September | 48.8 °F | 76.9 °F | 2.09 in. |
| October | 35.1 °F | 63.8 °F | 1.78 in. |
| November | 23.0 °F | 49.8 °F | 0.84 in. |
| December | 14.8 °F | 38.4 °F | 0.55 in. |
| Annual | 35.8 °F | 61.4 °F | 23.69 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |