Little Rock, Minnesota has a Humid Continental Mild Summer With Dry Winters climate (Köppen classification: Dwb). Average annual temperatures range from 29 °F (low) to 49.2 °F (high). Annual precipitation averages 23.3 Inches. 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 | -3.9 °F | 15.9 °F | 0.58 in. |
| February | -0.6 °F | 21.4 °F | 0.59 in. |
| March | 13.8 °F | 35.0 °F | 0.83 in. |
| April | 28.4 °F | 49.3 °F | 1.36 in. |
| May | 41.8 °F | 64.0 °F | 2.83 in. |
| June | 53.0 °F | 73.3 °F | 4.05 in. |
| July | 56.9 °F | 77.9 °F | 3.44 in. |
| August | 54.7 °F | 76.6 °F | 3.06 in. |
| September | 45.7 °F | 67.3 °F | 2.57 in. |
| October | 33.9 °F | 52.1 °F | 2.35 in. |
| November | 19.5 °F | 35.3 °F | 0.96 in. |
| December | 5.2 °F | 22.2 °F | 0.69 in. |
| Annual | 29 °F | 49.2 °F | 23.31 in. |
| 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 : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dwb - Humid Continental Mild Summer With Dry Winters |