Dumont, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.8 °F (low) to 53.1 °F (high). Annual precipitation averages 25.7 Inches. Dumont 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 | 1.9 °F | 20.1 °F | 0.69 in. |
| February | 5.2 °F | 24.3 °F | 0.66 in. |
| March | 18.7 °F | 37.2 °F | 1.11 in. |
| April | 32.1 °F | 53.8 °F | 2.42 in. |
| May | 45.5 °F | 67.7 °F | 3.06 in. |
| June | 56.6 °F | 77.2 °F | 4.0 in. |
| July | 60.5 °F | 81.5 °F | 3.93 in. |
| August | 57.4 °F | 79.6 °F | 2.85 in. |
| September | 48.4 °F | 72.3 °F | 2.67 in. |
| October | 35.7 °F | 57.2 °F | 2.45 in. |
| November | 22.1 °F | 40.2 °F | 1.05 in. |
| December | 9.2 °F | 25.7 °F | 0.76 in. |
| Annual | 32.8 °F | 53.1 °F | 25.65 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 |