Inkster, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29.8 °F (low) to 49.8 °F (high). Annual precipitation averages 21.9 Inches. Inkster 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 | -2.2 °F | 14.8 °F | 0.53 in. |
| February | 1.4 °F | 19.9 °F | 0.51 in. |
| March | 14.9 °F | 32.5 °F | 0.82 in. |
| April | 29.8 °F | 50.7 °F | 1.03 in. |
| May | 42.6 °F | 65.5 °F | 3.22 in. |
| June | 54.3 °F | 75.0 °F | 4.05 in. |
| July | 57.8 °F | 79.6 °F | 3.34 in. |
| August | 55.1 °F | 79.0 °F | 2.76 in. |
| September | 46.0 °F | 70.1 °F | 2.31 in. |
| October | 33.4 °F | 54.1 °F | 1.73 in. |
| November | 18.8 °F | 35.4 °F | 0.83 in. |
| December | 5.4 °F | 20.8 °F | 0.72 in. |
| Annual | 29.8 °F | 49.8 °F | 21.85 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | Over 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |