Mountain, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.4 °F (low) to 54 °F (high). Annual precipitation averages 32.5 Inches. Mountain is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.8 °F | 24.3 °F | 1.25 in. |
| February | 6.7 °F | 28.4 °F | 1.17 in. |
| March | 17.0 °F | 40.0 °F | 1.73 in. |
| April | 29.6 °F | 53.9 °F | 2.96 in. |
| May | 41.6 °F | 67.2 °F | 3.51 in. |
| June | 51.6 °F | 76.5 °F | 4.52 in. |
| July | 55.8 °F | 80.8 °F | 3.57 in. |
| August | 53.8 °F | 78.7 °F | 3.24 in. |
| September | 45.6 °F | 70.8 °F | 3.63 in. |
| October | 34.2 °F | 56.7 °F | 3.26 in. |
| November | 23.9 °F | 41.6 °F | 1.96 in. |
| December | 12.5 °F | 29.0 °F | 1.69 in. |
| Annual | 31.4 °F | 54 °F | 32.49 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |