Hugo, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 12.7 °C (high). Annual precipitation averages 842.5 Millimeters. Hugo is located in USDA Plant Hardiness Zone 4b. 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 | -14.4 °C | -4.9 °C | 23.11 mm |
| February | -12.7 °C | -2 °C | 22.61 mm |
| March | -6 °C | 5.1 °C | 41.66 mm |
| April | 1.3 °C | 13.1 °C | 77.47 mm |
| May | 8.3 °C | 20.2 °C | 106.68 mm |
| June | 14 °C | 25.4 °C | 120.9 mm |
| July | 16.7 °C | 27.9 °C | 108.2 mm |
| August | 15.3 °C | 26.7 °C | 108.97 mm |
| September | 10.6 °C | 22.4 °C | 85.6 mm |
| October | 3.4 °C | 14.4 °C | 73.66 mm |
| November | -3.6 °C | 5.7 °C | 41.66 mm |
| December | -10.5 °C | -2 °C | 32 mm |
| Annual | 1.9 °C | 12.7 °C | 842.52 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |