Ulysses, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39 °F (low) to 61.9 °F (high). Annual precipitation averages 29 Inches. Ulysses is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.1 °F | 33.5 °F | 0.65 in. |
| February | 17.1 °F | 38.2 °F | 0.77 in. |
| March | 27.0 °F | 50.6 °F | 1.5 in. |
| April | 37.5 °F | 62.4 °F | 2.83 in. |
| May | 49.8 °F | 73.0 °F | 4.88 in. |
| June | 60.5 °F | 82.9 °F | 4.5 in. |
| July | 64.8 °F | 86.9 °F | 3.26 in. |
| August | 62.2 °F | 84.7 °F | 3.71 in. |
| September | 52.8 °F | 78.4 °F | 2.57 in. |
| October | 39.8 °F | 65.5 °F | 2.11 in. |
| November | 26.9 °F | 50.1 °F | 1.26 in. |
| December | 17.0 °F | 37.1 °F | 0.91 in. |
| Annual | 39 °F | 61.9 °F | 28.95 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |