Oriska, 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 51.3 °F (high). Annual precipitation averages 22.4 Inches. Oriska 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 | -0.7 °F | 17.0 °F | 0.54 in. |
| February | 3.1 °F | 22.0 °F | 0.54 in. |
| March | 15.8 °F | 34.4 °F | 0.88 in. |
| April | 29.9 °F | 51.9 °F | 1.21 in. |
| May | 43.0 °F | 66.5 °F | 3.13 in. |
| June | 54.5 °F | 75.9 °F | 4.16 in. |
| July | 58.3 °F | 80.8 °F | 3.49 in. |
| August | 55.4 °F | 79.7 °F | 2.71 in. |
| September | 46.3 °F | 71.0 °F | 2.4 in. |
| October | 33.6 °F | 55.2 °F | 1.93 in. |
| November | 19.4 °F | 37.6 °F | 0.69 in. |
| December | 7.2 °F | 23.1 °F | 0.71 in. |
| Annual | 30.5 °F | 51.3 °F | 22.39 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |