Melrose, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.4 °F (low) to 53 °F (high). Annual precipitation averages 28.4 Inches. Melrose 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.6 °F | 20.3 °F | 0.7 in. |
| February | 5.4 °F | 25.6 °F | 0.71 in. |
| March | 18.2 °F | 37.9 °F | 1.36 in. |
| April | 31.6 °F | 53.7 °F | 2.44 in. |
| May | 44.6 °F | 67.3 °F | 3.49 in. |
| June | 55.3 °F | 77.2 °F | 4.4 in. |
| July | 59.7 °F | 81.7 °F | 4.26 in. |
| August | 56.8 °F | 79.4 °F | 3.59 in. |
| September | 48.4 °F | 71.4 °F | 2.62 in. |
| October | 35.6 °F | 56.2 °F | 2.75 in. |
| November | 22.3 °F | 39.1 °F | 1.2 in. |
| December | 9.5 °F | 25.8 °F | 0.91 in. |
| Annual | 32.4 °F | 53 °F | 28.43 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 |