Cuyuna, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.7 °C (low) to 10.6 °C (high). Annual precipitation averages 742.5 Millimeters. Cuyuna 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 | -17.9 °C | -7.3 °C | 20.07 mm |
| February | -16.3 °C | -4.1 °C | 20.07 mm |
| March | -8.9 °C | 3 °C | 36.07 mm |
| April | -1.1 °C | 10.9 °C | 58.42 mm |
| May | 6.2 °C | 18.3 °C | 87.12 mm |
| June | 12 °C | 23.7 °C | 109.98 mm |
| July | 14.2 °C | 26.2 °C | 114.3 mm |
| August | 12.7 °C | 25 °C | 89.66 mm |
| September | 8.1 °C | 20.3 °C | 75.95 mm |
| October | 1.4 °C | 12.2 °C | 70.87 mm |
| November | -5.6 °C | 3.2 °C | 35.31 mm |
| December | -12.9 °C | -4.2 °C | 24.64 mm |
| Annual | -0.7 °C | 10.6 °C | 742.46 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 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |