Sunol, Nebraska has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.6 °C (low) to 17.6 °C (high). Annual precipitation averages 465.8 Millimeters. Sunol 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 | -9.7 °C | 5 °C | 7.11 mm |
| February | -8.6 °C | 6.3 °C | 12.19 mm |
| March | -4.3 °C | 11.9 °C | 24.89 mm |
| April | -0.1 °C | 16.1 °C | 50.04 mm |
| May | 5.9 °C | 21.2 °C | 75.69 mm |
| June | 11.7 °C | 28 °C | 81.79 mm |
| July | 15.2 °C | 32 °C | 66.04 mm |
| August | 13.8 °C | 30.7 °C | 55.12 mm |
| September | 8.4 °C | 26.2 °C | 37.34 mm |
| October | 1.1 °C | 18.2 °C | 32.77 mm |
| November | -5.1 °C | 10.9 °C | 12.95 mm |
| December | -9.6 °C | 5.1 °C | 9.91 mm |
| Annual | 1.6 °C | 17.6 °C | 465.84 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 | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |