Morrill, Nebraska has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34.4 °F (low) to 63.3 °F (high). Annual precipitation averages 15.1 Inches. Morrill is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.0 °F | 40.4 °F | 0.24 in. |
| February | 16.7 °F | 42.9 °F | 0.48 in. |
| March | 24.4 °F | 52.7 °F | 0.81 in. |
| April | 31.8 °F | 60.2 °F | 1.88 in. |
| May | 42.4 °F | 70.2 °F | 2.91 in. |
| June | 52.4 °F | 82.2 °F | 2.44 in. |
| July | 58.6 °F | 89.3 °F | 1.64 in. |
| August | 56.0 °F | 87.4 °F | 1.1 in. |
| September | 45.9 °F | 78.7 °F | 1.44 in. |
| October | 32.8 °F | 64.2 °F | 1.36 in. |
| November | 22.1 °F | 50.9 °F | 0.46 in. |
| December | 14.1 °F | 41.0 °F | 0.37 in. |
| Annual | 34.4 °F | 63.3 °F | 15.13 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 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 | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |