Trenton, North Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 30.4 °F (low) to 55.3 °F (high). Annual precipitation averages 14.6 Inches. Trenton is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.2 °F | 23.5 °F | 0.39 in. |
| February | 7.4 °F | 28.7 °F | 0.27 in. |
| March | 18.4 °F | 41.0 °F | 0.5 in. |
| April | 30.4 °F | 56.6 °F | 0.92 in. |
| May | 41.2 °F | 67.9 °F | 2.05 in. |
| June | 51.1 °F | 76.7 °F | 2.94 in. |
| July | 56.6 °F | 84.6 °F | 2.62 in. |
| August | 53.9 °F | 84.7 °F | 1.58 in. |
| September | 43.9 °F | 74.2 °F | 1.41 in. |
| October | 31.9 °F | 57.8 °F | 0.96 in. |
| November | 18.8 °F | 40.4 °F | 0.54 in. |
| December | 8.2 °F | 27.7 °F | 0.42 in. |
| Annual | 30.4 °F | 55.3 °F | 14.6 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |