Montfort, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.5 °F (low) to 56.1 °F (high). Annual precipitation averages 38.5 Inches. Montfort is located in USDA Plant Hardiness Zone 5a. 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 | 10.3 °F | 26.1 °F | 1.34 in. |
| February | 13.8 °F | 30.6 °F | 1.39 in. |
| March | 25.0 °F | 43.0 °F | 2.09 in. |
| April | 36.1 °F | 56.8 °F | 3.91 in. |
| May | 47.9 °F | 68.4 °F | 4.55 in. |
| June | 58.1 °F | 77.8 °F | 5.74 in. |
| July | 62.0 °F | 81.2 °F | 4.76 in. |
| August | 59.9 °F | 79.6 °F | 4.1 in. |
| September | 51.5 °F | 72.7 °F | 3.9 in. |
| October | 39.8 °F | 59.8 °F | 2.84 in. |
| November | 28.5 °F | 45.0 °F | 2.2 in. |
| December | 17.4 °F | 31.9 °F | 1.68 in. |
| Annual | 37.5 °F | 56.1 °F | 38.5 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |