Ithaca, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.7 °F (low) to 61.9 °F (high). Annual precipitation averages 31.2 Inches. Ithaca 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.5 °F | 32.8 °F | 0.7 in. |
| February | 17.5 °F | 37.7 °F | 0.92 in. |
| March | 27.9 °F | 50.4 °F | 1.64 in. |
| April | 38.6 °F | 62.8 °F | 3.08 in. |
| May | 50.3 °F | 73.0 °F | 4.78 in. |
| June | 61.2 °F | 83.0 °F | 4.92 in. |
| July | 65.2 °F | 86.7 °F | 3.29 in. |
| August | 62.5 °F | 84.7 °F | 3.93 in. |
| September | 53.1 °F | 78.4 °F | 3.09 in. |
| October | 40.6 °F | 65.6 °F | 2.32 in. |
| November | 27.9 °F | 50.2 °F | 1.42 in. |
| December | 18.2 °F | 37.3 °F | 1.15 in. |
| Annual | 39.7 °F | 61.9 °F | 31.24 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |