Cayuga, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.3 °C (low) to 11.1 °C (high). Annual precipitation averages 604 Millimeters. Cayuga is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.1 °C | -7.2 °C | 16.51 mm |
| February | -14.7 °C | -4.6 °C | 15.49 mm |
| March | -7.8 °C | 2.4 °C | 25.15 mm |
| April | -0.1 °C | 11.4 °C | 45.47 mm |
| May | 7.4 °C | 19.1 °C | 78.99 mm |
| June | 13.5 °C | 24.4 °C | 109.22 mm |
| July | 15.8 °C | 26.9 °C | 91.44 mm |
| August | 14.3 °C | 26.2 °C | 59.44 mm |
| September | 9 °C | 21.8 °C | 65.28 mm |
| October | 1.6 °C | 13.1 °C | 58.42 mm |
| November | -5.9 °C | 3.8 °C | 20.57 mm |
| December | -12.8 °C | -3.7 °C | 18.03 mm |
| Annual | 0.3 °C | 11.1 °C | 604.01 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |