Erhard, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.1 °C (low) to 10.8 °C (high). Annual precipitation averages 668.3 Millimeters. Erhard 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.6 °C | -7.7 °C | 17.27 mm |
| February | -15.8 °C | -5.1 °C | 16 mm |
| March | -8.1 °C | 2.2 °C | 26.67 mm |
| April | -0.2 °C | 11.3 °C | 50.55 mm |
| May | 7.2 °C | 18.9 °C | 87.38 mm |
| June | 13.3 °C | 24.2 °C | 111.76 mm |
| July | 15.7 °C | 26.6 °C | 95.25 mm |
| August | 14.3 °C | 25.8 °C | 78.74 mm |
| September | 9.6 °C | 21.4 °C | 75.18 mm |
| October | 2.2 °C | 12.7 °C | 65.53 mm |
| November | -5.6 °C | 3.2 °C | 23.88 mm |
| December | -13.2 °C | -4.4 °C | 20.07 mm |
| Annual | 0.1 °C | 10.8 °C | 668.28 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |