Sykeston, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29.9 °F (low) to 51 °F (high). Annual precipitation averages 19.8 Inches. Sykeston is located in USDA Plant Hardiness Zone 4a. 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 | 0.2 °F | 18.0 °F | 0.47 in. |
| February | 3.7 °F | 22.4 °F | 0.5 in. |
| March | 15.6 °F | 34.8 °F | 0.68 in. |
| April | 29.0 °F | 51.6 °F | 1.18 in. |
| May | 41.9 °F | 65.4 °F | 2.64 in. |
| June | 53.2 °F | 74.8 °F | 3.74 in. |
| July | 57.5 °F | 80.0 °F | 3.3 in. |
| August | 54.7 °F | 79.7 °F | 2.39 in. |
| September | 45.6 °F | 70.6 °F | 1.86 in. |
| October | 32.7 °F | 54.4 °F | 1.73 in. |
| November | 18.6 °F | 37.0 °F | 0.64 in. |
| December | 6.5 °F | 23.0 °F | 0.64 in. |
| Annual | 29.9 °F | 51 °F | 19.77 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 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 |