Harding, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.5 °C (low) to 10.9 °C (high). Annual precipitation averages 751.3 Millimeters. Harding 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 | -18 °C | -7.1 °C | 18.03 mm |
| February | -16.2 °C | -3.9 °C | 20.32 mm |
| March | -8.8 °C | 3.2 °C | 36.07 mm |
| April | -1.2 °C | 11.2 °C | 61.47 mm |
| May | 6.2 °C | 18.8 °C | 89.92 mm |
| June | 12.1 °C | 24.1 °C | 115.57 mm |
| July | 14.7 °C | 26.7 °C | 106.43 mm |
| August | 13.2 °C | 25.4 °C | 98.3 mm |
| September | 8.6 °C | 20.8 °C | 73.66 mm |
| October | 1.7 °C | 12.7 °C | 72.39 mm |
| November | -5.5 °C | 3.4 °C | 34.29 mm |
| December | -13 °C | -4.1 °C | 24.89 mm |
| Annual | -0.5 °C | 10.9 °C | 751.34 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 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |