Little Rock, Minnesota has a Humid Continental Mild Summer With Dry Winters climate (Köppen classification: Dwb). Average annual temperatures range from -1.6 °C (low) to 9.6 °C (high). Annual precipitation averages 592.1 Millimeters. Little Rock is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -19.9 °C | -8.9 °C | 14.73 mm |
| February | -18.1 °C | -5.9 °C | 14.99 mm |
| March | -10.1 °C | 1.7 °C | 21.08 mm |
| April | -2 °C | 9.6 °C | 34.54 mm |
| May | 5.4 °C | 17.8 °C | 71.88 mm |
| June | 11.7 °C | 22.9 °C | 102.87 mm |
| July | 13.8 °C | 25.5 °C | 87.38 mm |
| August | 12.6 °C | 24.8 °C | 77.72 mm |
| September | 7.6 °C | 19.6 °C | 65.28 mm |
| October | 1.1 °C | 11.2 °C | 59.69 mm |
| November | -6.9 °C | 1.8 °C | 24.38 mm |
| December | -14.9 °C | -5.4 °C | 17.53 mm |
| Annual | -1.6 °C | 9.6 °C | 592.07 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dwb - Humid Continental Mild Summer With Dry Winters |