Wells, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.5 °F (low) to 55.1 °F (high). Annual precipitation averages 34.4 Inches. Wells is located in USDA Plant Hardiness Zone 4b. 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 | 5.7 °F | 23.3 °F | 0.75 in. |
| February | 9.7 °F | 27.7 °F | 0.84 in. |
| March | 22.5 °F | 40.3 °F | 1.74 in. |
| April | 34.8 °F | 56.0 °F | 3.35 in. |
| May | 47.4 °F | 68.6 °F | 4.63 in. |
| June | 58.5 °F | 78.6 °F | 5.39 in. |
| July | 62.0 °F | 82.0 °F | 4.66 in. |
| August | 59.3 °F | 79.4 °F | 4.2 in. |
| September | 50.8 °F | 73.5 °F | 3.74 in. |
| October | 37.7 °F | 59.5 °F | 2.56 in. |
| November | 25.0 °F | 42.9 °F | 1.41 in. |
| December | 12.9 °F | 28.8 °F | 1.1 in. |
| Annual | 35.5 °F | 55.1 °F | 34.37 in. |
| 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |