New Munster, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.2 °C (low) to 14 °C (high). Annual precipitation averages 929.4 Millimeters. New Munster is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.6 °C | -1.8 °C | 45.97 mm |
| February | -8.9 °C | 0.3 °C | 45.97 mm |
| March | -3.8 °C | 6.4 °C | 54.61 mm |
| April | 1.9 °C | 13.7 °C | 95.5 mm |
| May | 7.8 °C | 20.1 °C | 107.7 mm |
| June | 13.6 °C | 25.6 °C | 118.11 mm |
| July | 16.1 °C | 27.8 °C | 92.71 mm |
| August | 15.2 °C | 26.9 °C | 92.46 mm |
| September | 10.8 °C | 23.3 °C | 89.66 mm |
| October | 4.5 °C | 15.9 °C | 74.93 mm |
| November | -1.4 °C | 8 °C | 60.96 mm |
| December | -7.1 °C | 1.2 °C | 50.8 mm |
| Annual | 3.2 °C | 14 °C | 929.38 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |