Hay Springs, Nebraska has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.9 °F (low) to 60.8 °F (high). Annual precipitation averages 19.1 Inches. Hay Springs 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.1 °F | 37.2 °F | 0.45 in. |
| February | 15.2 °F | 39.9 °F | 0.55 in. |
| March | 23.4 °F | 50.3 °F | 0.99 in. |
| April | 31.3 °F | 58.2 °F | 2.3 in. |
| May | 41.9 °F | 67.8 °F | 3.0 in. |
| June | 52.1 °F | 79.2 °F | 3.1 in. |
| July | 58.6 °F | 86.3 °F | 2.54 in. |
| August | 56.4 °F | 85.3 °F | 1.93 in. |
| September | 46.1 °F | 76.8 °F | 1.54 in. |
| October | 33.2 °F | 61.9 °F | 1.5 in. |
| November | 21.9 °F | 48.5 °F | 0.65 in. |
| December | 13.4 °F | 37.9 °F | 0.59 in. |
| Annual | 33.9 °F | 60.8 °F | 19.14 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |