Carlos, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.1 °C (low) to 10.9 °C (high). Annual precipitation averages 672.1 Millimeters. Carlos is located in USDA Plant Hardiness Zone 4a. 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 | -17.3 °C | -7.3 °C | 18.54 mm |
| February | -15.3 °C | -4.5 °C | 14.99 mm |
| March | -8.2 °C | 2.4 °C | 28.96 mm |
| April | -0.3 °C | 11.3 °C | 51.31 mm |
| May | 7.1 °C | 18.9 °C | 81.79 mm |
| June | 13.1 °C | 24.2 °C | 109.73 mm |
| July | 15.6 °C | 26.7 °C | 104.39 mm |
| August | 14.1 °C | 25.7 °C | 84.33 mm |
| September | 9.3 °C | 21.2 °C | 66.29 mm |
| October | 1.9 °C | 12.8 °C | 65.79 mm |
| November | -5.5 °C | 3.4 °C | 25.65 mm |
| December | -12.8 °C | -4.1 °C | 20.32 mm |
| Annual | 0.1 °C | 10.9 °C | 672.09 mm |
| 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 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |