Hinckley, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.7 °C (low) to 11.5 °C (high). Annual precipitation averages 818.6 Millimeters. Hinckley 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 | -17.3 °C | -6.1 °C | 20.57 mm |
| February | -15.3 °C | -3.1 °C | 22.35 mm |
| March | -8.2 °C | 3.8 °C | 39.37 mm |
| April | -1.2 °C | 11.7 °C | 69.6 mm |
| May | 5.5 °C | 19.2 °C | 94.74 mm |
| June | 11.2 °C | 24.3 °C | 114.81 mm |
| July | 13.8 °C | 26.7 °C | 116.84 mm |
| August | 12.5 °C | 25.7 °C | 104.9 mm |
| September | 7.8 °C | 21.2 °C | 84.58 mm |
| October | 1.3 °C | 13.2 °C | 78.23 mm |
| November | -5.4 °C | 4.2 °C | 41.91 mm |
| December | -12.6 °C | -3.2 °C | 30.73 mm |
| Annual | -0.7 °C | 11.5 °C | 818.63 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 |