Oshkosh, Nebraska has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34.6 °F (low) to 63.8 °F (high). Annual precipitation averages 18.2 Inches. Oshkosh 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 | 12.4 °F | 40.1 °F | 0.26 in. |
| February | 15.6 °F | 43.8 °F | 0.39 in. |
| March | 23.8 °F | 54.2 °F | 0.93 in. |
| April | 32.7 °F | 62.3 °F | 2.01 in. |
| May | 43.4 °F | 70.9 °F | 3.06 in. |
| June | 54.0 °F | 82.5 °F | 3.09 in. |
| July | 59.9 °F | 88.7 °F | 2.89 in. |
| August | 57.6 °F | 86.7 °F | 1.96 in. |
| September | 47.6 °F | 79.0 °F | 1.52 in. |
| October | 33.5 °F | 64.9 °F | 1.26 in. |
| November | 21.5 °F | 51.9 °F | 0.46 in. |
| December | 13.1 °F | 40.9 °F | 0.35 in. |
| Annual | 34.6 °F | 63.8 °F | 18.18 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 |