Mount Pleasant, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.1 °F (low) to 55.9 °F (high). Annual precipitation averages 36.4 Inches. Mount Pleasant is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.3 °F | 29.7 °F | 1.87 in. |
| February | 17.9 °F | 32.7 °F | 1.82 in. |
| March | 27.0 °F | 42.5 °F | 2.31 in. |
| April | 37.1 °F | 53.2 °F | 4.2 in. |
| May | 47.4 °F | 64.5 °F | 4.17 in. |
| June | 57.7 °F | 74.6 °F | 4.18 in. |
| July | 63.7 °F | 80.4 °F | 3.25 in. |
| August | 63.0 °F | 79.1 °F | 3.57 in. |
| September | 55.1 °F | 72.6 °F | 3.35 in. |
| October | 43.2 °F | 60.0 °F | 3.12 in. |
| November | 31.7 °F | 46.8 °F | 2.46 in. |
| December | 21.5 °F | 35.0 °F | 2.05 in. |
| Annual | 40.1 °F | 55.9 °F | 36.35 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |