Holbrook, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.3 °F (low) to 65.2 °F (high). Annual precipitation averages 23.3 Inches. Holbrook is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.9 °F | 40.1 °F | 0.42 in. |
| February | 16.8 °F | 43.9 °F | 0.64 in. |
| March | 25.7 °F | 55.3 °F | 1.18 in. |
| April | 35.3 °F | 64.3 °F | 2.28 in. |
| May | 47.1 °F | 73.9 °F | 3.48 in. |
| June | 58.3 °F | 84.9 °F | 3.57 in. |
| July | 63.4 °F | 89.6 °F | 3.7 in. |
| August | 60.8 °F | 87.3 °F | 3.03 in. |
| September | 50.7 °F | 80.7 °F | 1.68 in. |
| October | 36.6 °F | 67.9 °F | 1.81 in. |
| November | 23.9 °F | 53.3 °F | 0.87 in. |
| December | 15.4 °F | 41.7 °F | 0.64 in. |
| Annual | 37.3 °F | 65.2 °F | 23.3 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |