Miltona, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32 °F (low) to 51.4 °F (high). Annual precipitation averages 26.8 Inches. Miltona 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.5 °F | 18.7 °F | 0.73 in. |
| February | 3.8 °F | 23.7 °F | 0.63 in. |
| March | 16.9 °F | 36.2 °F | 1.17 in. |
| April | 31.1 °F | 52.2 °F | 2.07 in. |
| May | 44.5 °F | 65.7 °F | 3.28 in. |
| June | 55.3 °F | 75.2 °F | 4.35 in. |
| July | 59.9 °F | 79.8 °F | 4.2 in. |
| August | 57.1 °F | 78.0 °F | 3.32 in. |
| September | 48.6 °F | 69.9 °F | 2.62 in. |
| October | 35.3 °F | 54.7 °F | 2.65 in. |
| November | 22.0 °F | 37.9 °F | 0.98 in. |
| December | 8.7 °F | 24.4 °F | 0.82 in. |
| Annual | 32 °F | 51.4 °F | 26.82 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 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |