Randall, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Annual precipitation averages 714.8 Millimeters. Randall 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 | -6.7 °C | 15.75 mm |
| February | -15.4 °C | -3.7 °C | 18.03 mm |
| March | -8 °C | 3.4 °C | 32.26 mm |
| April | -0.6 °C | 11.9 °C | 59.69 mm |
| May | 6.8 °C | 19.4 °C | 90.93 mm |
| June | 12.7 °C | 24.7 °C | 112.27 mm |
| July | 15.1 °C | 27.4 °C | 102.36 mm |
| August | 13.4 °C | 26.2 °C | 87.63 mm |
| September | 8.8 °C | 21.6 °C | 73.15 mm |
| October | 1.9 °C | 13.2 °C | 69.6 mm |
| November | -5.4 °C | 3.9 °C | 30.73 mm |
| December | -12.5 °C | -3.6 °C | 22.35 mm |
| Annual | -0 °C | 11.5 °C | 714.75 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |