Denhoff, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.5 °F (low) to 52 °F (high). Annual precipitation averages 18.7 Inches. Denhoff is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °F | 19.6 °F | 0.46 in. |
| February | 5.3 °F | 23.9 °F | 0.45 in. |
| March | 16.7 °F | 36.3 °F | 0.62 in. |
| April | 29.7 °F | 53.0 °F | 1.02 in. |
| May | 42.1 °F | 66.2 °F | 2.73 in. |
| June | 52.5 °F | 75.2 °F | 3.51 in. |
| July | 57.8 °F | 81.3 °F | 2.96 in. |
| August | 55.4 °F | 81.1 °F | 2.11 in. |
| September | 46.1 °F | 71.3 °F | 2.04 in. |
| October | 33.1 °F | 55.1 °F | 1.45 in. |
| November | 18.9 °F | 37.4 °F | 0.73 in. |
| December | 7.3 °F | 24.1 °F | 0.64 in. |
| Annual | 30.5 °F | 52 °F | 18.72 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |