West Milwaukee, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.3 °C (low) to 14 °C (high). Annual precipitation averages 909.8 Millimeters. West Milwaukee is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | -1.2 °C | 44.96 mm |
| February | -7.9 °C | 0.7 °C | 43.69 mm |
| March | -3 °C | 6.4 °C | 51.31 mm |
| April | 2.7 °C | 12.8 °C | 101.6 mm |
| May | 8.7 °C | 19.4 °C | 101.35 mm |
| June | 14.3 °C | 24.9 °C | 121.41 mm |
| July | 17.4 °C | 27.7 °C | 90.42 mm |
| August | 16.8 °C | 27.1 °C | 94.74 mm |
| September | 12.3 °C | 23.3 °C | 81.79 mm |
| October | 5.8 °C | 16.4 °C | 71.37 mm |
| November | -0.4 °C | 8.4 °C | 54.86 mm |
| December | -6.1 °C | 1.7 °C | 52.32 mm |
| Annual | 4.3 °C | 14 °C | 909.82 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |