Sunburg, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.1 °F (low) to 53.1 °F (high). Annual precipitation averages 28 Inches. Sunburg is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.4 °F | 20.4 °F | 0.68 in. |
| February | 5.8 °F | 25.3 °F | 0.71 in. |
| March | 18.7 °F | 37.7 °F | 1.49 in. |
| April | 32.4 °F | 54.1 °F | 2.33 in. |
| May | 45.4 °F | 67.7 °F | 3.21 in. |
| June | 56.1 °F | 77.3 °F | 4.46 in. |
| July | 60.6 °F | 81.6 °F | 4.25 in. |
| August | 57.8 °F | 79.3 °F | 3.67 in. |
| September | 49.2 °F | 71.9 °F | 2.65 in. |
| October | 36.0 °F | 57.0 °F | 2.42 in. |
| November | 22.6 °F | 39.6 °F | 1.23 in. |
| December | 9.8 °F | 25.8 °F | 0.89 in. |
| Annual | 33.1 °F | 53.1 °F | 27.99 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |