Lexington, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.7 °F (low) to 63.2 °F (high). Annual precipitation averages 24 Inches. Lexington is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.7 °F | 37.5 °F | 0.4 in. |
| February | 17.3 °F | 41.5 °F | 0.66 in. |
| March | 26.2 °F | 52.6 °F | 1.24 in. |
| April | 35.8 °F | 62.1 °F | 2.49 in. |
| May | 47.0 °F | 72.1 °F | 3.85 in. |
| June | 58.0 °F | 83.0 °F | 3.6 in. |
| July | 62.7 °F | 87.7 °F | 3.7 in. |
| August | 60.5 °F | 84.9 °F | 3.12 in. |
| September | 50.9 °F | 79.0 °F | 1.69 in. |
| October | 37.6 °F | 66.1 °F | 1.82 in. |
| November | 25.0 °F | 51.9 °F | 0.8 in. |
| December | 16.4 °F | 40.1 °F | 0.61 in. |
| Annual | 37.7 °F | 63.2 °F | 23.98 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |