Warroad, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.4 °C (low) to 8.6 °C (high). Annual precipitation averages 660.4 Millimeters. Warroad is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -21 °C | -10.7 °C | 20.07 mm |
| February | -19.4 °C | -7.6 °C | 17.27 mm |
| March | -11.4 °C | -0.1 °C | 20.07 mm |
| April | -2.4 °C | 9.2 °C | 35.05 mm |
| May | 4.9 °C | 16.8 °C | 81.03 mm |
| June | 11 °C | 21.9 °C | 112.27 mm |
| July | 13.4 °C | 25.4 °C | 97.79 mm |
| August | 11.7 °C | 24.6 °C | 84.58 mm |
| September | 7.3 °C | 19.4 °C | 81.53 mm |
| October | 0.1 °C | 10.1 °C | 56.9 mm |
| November | -7.4 °C | 1.1 °C | 28.96 mm |
| December | -15.8 °C | -6.9 °C | 24.89 mm |
| Annual | -2.4 °C | 8.6 °C | 660.41 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Plant Hardiness Zone - 2012 | Zone 3a : -40°C to -37.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |