All Countries
West Allis, WI
Full City Profile · Wisconsin · Waukesha County County
3.4
/5.0
B
Good
59,588
Population
5,236/sq mi density
$69,685
Median Income
$39,423 per capita
$191,700
Home Value
$263,439 Zillow
$1,012
Median Rent
24.6% income on rent
49°F
Avg Temperature
260 sunny days/yr
356
Violent Crime/100K
2,843 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.2 / 5.0
$69,685 median income, 2.6% unemployment
A+
Affordability
5.0 / 5.0
$191,700 home value, $1,012/mo rent
F
Safety
1.0 / 5.0
356 violent crimes/100K
B
Education
3.4 / 5.0
29.4% bachelor's degree or higher
West Allis experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 23°F in January while summers reach 74°F in July. The area gets 260 sunny days per year. Annual precipitation totals 39.4 inches. The area receives 52.3 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
23°F Jan (-5°C)
74°F Jul (23°C)
| Annual Average | 49.1°F |
| 9% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 787 ft (240 m) |
| Area | 11.4 sq mi (29.6 km²) |
| Population Density | 5,236/sq mi |
| Coordinates | 43.0072°N, 88.0290°W |
| Timezone | America/Chicago |
| County | Waukesha County County |
| Nearest Airport | General Mitchell International (MKE) 8 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0501 ppm |
| PM2.5 (Fine Particles) | 10.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 88.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 97.4 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 1.4 in | Coldest |
| February | 24°F (-5°C) | 1.1 in | Driest |
| March | 34°F (1°C) | 2.1 in | |
| April | 45°F (7°C) | 3.2 in | |
| May | 57°F (14°C) | 2.9 in | |
| June | 66°F (19°C) | 3.6 in | |
| July | 74°F (23°C) | 3.7 in | Warmest |
| August | 70°F (21°C) | 3.9 in | Wettest |
| September | 62°F (17°C) | 3.8 in | |
| October | 50°F (10°C) | 2.4 in | |
| November | 37°F (3°C) | 2.4 in | |
| December | 25°F (-4°C) | 1.9 in |
West Allis has a seasonal temperature swing of 51°F / from 23°F in January to 74°F in July. Total annual precipitation is 32.4 inches, with August being the wettest month (3.9") and February the driest (1.1").