Hershey, Nebraska has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.2 °C (low) to 17.3 °C (high). Annual precipitation averages 512.8 Millimeters. Hershey 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 | -10.2 °C | 3.7 °C | 7.11 mm |
| February | -8.8 °C | 5.4 °C | 11.43 mm |
| March | -4.1 °C | 11.5 °C | 25.15 mm |
| April | 0.9 °C | 16.3 °C | 49.78 mm |
| May | 7 °C | 21.7 °C | 85.34 mm |
| June | 13.2 °C | 28.1 °C | 93.98 mm |
| July | 16.1 °C | 31.3 °C | 75.18 mm |
| August | 14.9 °C | 30.2 °C | 58.67 mm |
| September | 9.5 °C | 26.1 °C | 40.39 mm |
| October | 1.9 °C | 18.2 °C | 45.72 mm |
| November | -4.8 °C | 10.7 °C | 11.43 mm |
| December | -9.6 °C | 4.5 °C | 8.64 mm |
| Annual | 2.2 °C | 17.3 °C | 512.82 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |