Denhoff, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.8 °C (low) to 11.1 °C (high). Annual precipitation averages 475.5 Millimeters. 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 | -17.1 °C | -6.9 °C | 11.68 mm |
| February | -14.8 °C | -4.5 °C | 11.43 mm |
| March | -8.5 °C | 2.4 °C | 15.75 mm |
| April | -1.3 °C | 11.7 °C | 25.91 mm |
| May | 5.6 °C | 19 °C | 69.34 mm |
| June | 11.4 °C | 24 °C | 89.15 mm |
| July | 14.3 °C | 27.4 °C | 75.18 mm |
| August | 13 °C | 27.3 °C | 53.59 mm |
| September | 7.8 °C | 21.8 °C | 51.82 mm |
| October | 0.6 °C | 12.8 °C | 36.83 mm |
| November | -7.3 °C | 3 °C | 18.54 mm |
| December | -13.7 °C | -4.4 °C | 16.26 mm |
| Annual | -0.8 °C | 11.1 °C | 475.48 mm |
| 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 : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |