Cook, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 17.3 °C (high). Annual precipitation averages 822.2 Millimeters. Cook 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 | -9.9 °C | 1.3 °C | 20.32 mm |
| February | -7.6 °C | 4.3 °C | 27.18 mm |
| March | -1.7 °C | 11.3 °C | 49.53 mm |
| April | 4.1 °C | 17.7 °C | 76.2 mm |
| May | 10.7 °C | 23.3 °C | 136.65 mm |
| June | 16.5 °C | 28.5 °C | 115.32 mm |
| July | 18.7 °C | 30.8 °C | 102.11 mm |
| August | 17.2 °C | 29.8 °C | 85.6 mm |
| September | 11.9 °C | 26.2 °C | 75.95 mm |
| October | 5.1 °C | 19.5 °C | 64.26 mm |
| November | -1.9 °C | 10.8 °C | 38.61 mm |
| December | -7.3 °C | 3.9 °C | 30.48 mm |
| Annual | 4.7 °C | 17.3 °C | 822.21 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |