Oakes, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.4 °C (low) to 11.6 °C (high). Annual precipitation averages 595.9 Millimeters. Oakes 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 | -17.3 °C | -6.9 °C | 13.21 mm |
| February | -15.1 °C | -4.1 °C | 16.26 mm |
| March | -8.1 °C | 2.9 °C | 26.67 mm |
| April | -0.8 °C | 11.9 °C | 43.18 mm |
| May | 6.7 °C | 19.5 °C | 81.79 mm |
| June | 12.9 °C | 24.7 °C | 106.43 mm |
| July | 15.1 °C | 27.5 °C | 89.92 mm |
| August | 13.5 °C | 27 °C | 61.72 mm |
| September | 8.2 °C | 22.3 °C | 67.56 mm |
| October | 0.8 °C | 13.7 °C | 55.63 mm |
| November | -6.8 °C | 3.8 °C | 16.76 mm |
| December | -13.3 °C | -3.7 °C | 16.76 mm |
| Annual | -0.4 °C | 11.6 °C | 595.89 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 |