Brookfield, WI
Full City Profile · Wisconsin · Waukesha County County
3.9
/5.0
B+
Good
41,592
Population
1,521/sq mi density
$124,026
Median Income
$67,459 per capita
$419,300
Home Value
$528,294 Zillow
$1,794
Median Rent
24.5% income on rent
47°F
Avg Temperature
83
Violent Crime/100K
1,100 property/100K
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$124,026 median income, 3.0% unemployment
A+
Affordability
4.8 / 5.0
$419,300 home value, $1,794/mo rent
F
Safety
1.0 / 5.0
83 violent crimes/100K
A+
Education
5.0 / 5.0
62.8% bachelor's degree or higher
Brookfield experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 20°F in January while summers reach 71°F in July. Annual precipitation totals 35.9 inches. The area receives 39.5 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
20°F Jan (-7°C)
71°F Jul (22°C)
| Annual Average | 46.6°F |
| 14% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 71°F (22°C) |
Geography
| Elevation | 837 ft (255 m) |
| Area | 27.6 sq mi (71.5 km²) |
| Population Density | 1,521/sq mi |
| Coordinates | 43.0643°N, 88.1178°W |
| Timezone | America/Chicago |
| County | Waukesha County County |
| Nearest Airport | General Mitchell International (MKE) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
| Good Days % | 71.0% |
| Unhealthy Days | 1 |
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 | 20°F (-7°C) | 1.6 in | Coldest |
| February | 23°F (-5°C) | 1.6 in | Driest |
| March | 34°F (1°C) | 2.1 in | |
| April | 45°F (7°C) | 3.7 in | |
| May | 57°F (14°C) | 3.9 in | |
| June | 66°F (19°C) | 4.8 in | Wettest |
| July | 71°F (22°C) | 3.8 in | Warmest |
| August | 70°F (21°C) | 4.0 in | |
| September | 62°F (17°C) | 3.2 in | |
| October | 50°F (10°C) | 3.1 in | |
| November | 37°F (3°C) | 2.2 in | |
| December | 26°F (-3°C) | 2.0 in |
Brookfield has a seasonal temperature swing of 51°F / from 20°F in January to 71°F in July. Total annual precipitation is 35.9 inches, with June being the wettest month (4.8") and February the driest (1.6").