Sunol, Nebraska has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34.8 °F (low) to 63.8 °F (high). Annual precipitation averages 18.3 Inches. 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 | 14.6 °F | 41.0 °F | 0.28 in. |
| February | 16.5 °F | 43.4 °F | 0.48 in. |
| March | 24.2 °F | 53.5 °F | 0.98 in. |
| April | 31.8 °F | 60.9 °F | 1.97 in. |
| May | 42.6 °F | 70.2 °F | 2.98 in. |
| June | 53.0 °F | 82.4 °F | 3.22 in. |
| July | 59.3 °F | 89.6 °F | 2.6 in. |
| August | 56.8 °F | 87.3 °F | 2.17 in. |
| September | 47.2 °F | 79.1 °F | 1.47 in. |
| October | 33.9 °F | 64.8 °F | 1.29 in. |
| November | 22.8 °F | 51.6 °F | 0.51 in. |
| December | 14.7 °F | 41.2 °F | 0.39 in. |
| Annual | 34.8 °F | 63.8 °F | 18.34 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 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |