Trenton, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.3 °F (low) to 65.9 °F (high). Annual precipitation averages 20.4 Inches. Trenton 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 | 41.4 °F | 0.36 in. |
| February | 17.1 °F | 44.5 °F | 0.49 in. |
| March | 25.4 °F | 55.6 °F | 0.99 in. |
| April | 34.9 °F | 64.7 °F | 2.13 in. |
| May | 46.4 °F | 74.2 °F | 3.0 in. |
| June | 57.3 °F | 85.6 °F | 3.06 in. |
| July | 63.0 °F | 91.3 °F | 3.31 in. |
| August | 60.7 °F | 89.0 °F | 2.92 in. |
| September | 50.7 °F | 81.4 °F | 1.39 in. |
| October | 36.7 °F | 67.6 °F | 1.57 in. |
| November | 24.3 °F | 53.4 °F | 0.67 in. |
| December | 16.1 °F | 42.4 °F | 0.49 in. |
| Annual | 37.3 °F | 65.9 °F | 20.38 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |