Oriska, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.9 °C (low) to 10.7 °C (high). Annual precipitation averages 568.7 Millimeters. 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 | -18.2 °C | -8.3 °C | 13.72 mm |
| February | -16.1 °C | -5.6 °C | 13.72 mm |
| March | -9 °C | 1.3 °C | 22.35 mm |
| April | -1.2 °C | 11.1 °C | 30.73 mm |
| May | 6.1 °C | 19.2 °C | 79.5 mm |
| June | 12.5 °C | 24.4 °C | 105.66 mm |
| July | 14.6 °C | 27.1 °C | 88.65 mm |
| August | 13 °C | 26.5 °C | 68.83 mm |
| September | 7.9 °C | 21.7 °C | 60.96 mm |
| October | 0.9 °C | 12.9 °C | 49.02 mm |
| November | -7 °C | 3.1 °C | 17.53 mm |
| December | -13.8 °C | -4.9 °C | 18.03 mm |
| Annual | -0.9 °C | 10.7 °C | 568.7 mm |
| 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 : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |