Oak, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.2 °F (low) to 64 °F (high). Annual precipitation averages 28.1 Inches. Oak is located in USDA Plant Hardiness Zone 6a. 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 | 15.4 °F | 36.7 °F | 0.66 in. |
| February | 18.9 °F | 41.3 °F | 0.78 in. |
| March | 28.2 °F | 53.5 °F | 1.48 in. |
| April | 38.4 °F | 64.2 °F | 2.52 in. |
| May | 50.0 °F | 73.9 °F | 4.56 in. |
| June | 61.0 °F | 84.5 °F | 3.96 in. |
| July | 65.4 °F | 88.7 °F | 4.09 in. |
| August | 63.2 °F | 86.3 °F | 3.41 in. |
| September | 53.7 °F | 79.6 °F | 2.36 in. |
| October | 40.9 °F | 67.1 °F | 2.12 in. |
| November | 28.1 °F | 52.1 °F | 1.23 in. |
| December | 19.0 °F | 39.9 °F | 0.89 in. |
| Annual | 40.2 °F | 64 °F | 28.06 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 6a : -10°F to -5°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 |