Roscoe, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.4 °F (low) to 52.9 °F (high). Annual precipitation averages 29.1 Inches. Roscoe 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 | 2.8 °F | 20.7 °F | 0.71 in. |
| February | 6.2 °F | 25.4 °F | 0.79 in. |
| March | 19.2 °F | 37.9 °F | 1.48 in. |
| April | 32.7 °F | 53.5 °F | 2.48 in. |
| May | 45.7 °F | 66.8 °F | 3.58 in. |
| June | 56.4 °F | 76.7 °F | 4.47 in. |
| July | 60.8 °F | 81.1 °F | 4.13 in. |
| August | 57.9 °F | 78.8 °F | 3.92 in. |
| September | 49.3 °F | 71.4 °F | 2.78 in. |
| October | 36.4 °F | 56.5 °F | 2.53 in. |
| November | 23.2 °F | 39.6 °F | 1.29 in. |
| December | 10.3 °F | 26.1 °F | 0.93 in. |
| Annual | 33.4 °F | 52.9 °F | 29.09 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 |