Louisburg, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.5 °F (low) to 54.5 °F (high). Annual precipitation averages 26.8 Inches. Louisburg is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.3 °F | 22.0 °F | 0.73 in. |
| February | 6.6 °F | 26.4 °F | 0.79 in. |
| March | 19.6 °F | 38.7 °F | 1.34 in. |
| April | 32.8 °F | 55.1 °F | 2.34 in. |
| May | 46.1 °F | 68.6 °F | 2.95 in. |
| June | 57.2 °F | 78.4 °F | 4.12 in. |
| July | 60.7 °F | 82.2 °F | 4.22 in. |
| August | 57.7 °F | 80.3 °F | 3.42 in. |
| September | 48.9 °F | 73.5 °F | 2.64 in. |
| October | 35.8 °F | 58.6 °F | 2.38 in. |
| November | 22.8 °F | 42.1 °F | 1.12 in. |
| December | 10.3 °F | 27.5 °F | 0.72 in. |
| Annual | 33.5 °F | 54.5 °F | 26.77 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |