Curtis, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.1 °F (low) to 64.4 °F (high). Annual precipitation averages 21.4 Inches. Curtis 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 | 14.0 °F | 39.7 °F | 0.34 in. |
| February | 16.8 °F | 42.5 °F | 0.56 in. |
| March | 25.7 °F | 53.7 °F | 0.96 in. |
| April | 35.2 °F | 62.6 °F | 2.24 in. |
| May | 46.2 °F | 73.0 °F | 3.48 in. |
| June | 57.3 °F | 84.0 °F | 3.53 in. |
| July | 62.7 °F | 89.4 °F | 3.16 in. |
| August | 60.3 °F | 87.1 °F | 2.78 in. |
| September | 50.3 °F | 80.2 °F | 1.67 in. |
| October | 36.5 °F | 66.8 °F | 1.47 in. |
| November | 24.3 °F | 52.7 °F | 0.73 in. |
| December | 15.4 °F | 41.2 °F | 0.49 in. |
| Annual | 37.1 °F | 64.4 °F | 21.41 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |