Grey Eagle, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.2 °C (low) to 11.5 °C (high). Annual precipitation averages 727.5 Millimeters. Grey Eagle is located in USDA Plant Hardiness Zone 4b. 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 | -16.9 °C | -6.5 °C | 18.54 mm |
| February | -14.8 °C | -3.6 °C | 17.78 mm |
| March | -7.7 °C | 3.3 °C | 35.56 mm |
| April | -0.2 °C | 11.9 °C | 63.75 mm |
| May | 6.9 °C | 19.4 °C | 85.85 mm |
| June | 12.8 °C | 24.8 °C | 114.81 mm |
| July | 15.4 °C | 27.4 °C | 105.16 mm |
| August | 13.8 °C | 26.2 °C | 88.39 mm |
| September | 9.1 °C | 21.7 °C | 73.66 mm |
| October | 2 °C | 13.2 °C | 70.61 mm |
| November | -5.3 °C | 3.9 °C | 30.99 mm |
| December | -12.5 °C | -3.5 °C | 22.35 mm |
| Annual | 0.2 °C | 11.5 °C | 727.45 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |