Williams Bay, WI
Full City Profile · Wisconsin · Walworth County County
3.7
/5.0
B+
Good
2,967
Population
1,067/sq mi density
$70,568
Median Income
$49,242 per capita
$397,600
Home Value
$549,741 Zillow
$799
Median Rent
18.9% income on rent
49°F
Avg Temperature
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.2 / 5.0
$70,568 median income, 2.9% unemployment
B
Affordability
3.5 / 5.0
$397,600 home value, $799/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A+
Education
4.7 / 5.0
46.2% bachelor's degree or higher
Williams Bay 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. Annual precipitation totals 36.9 inches. The area receives 40.1 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
23°F Jan (-5°C)
74°F Jul (24°C)
| Annual Average | 49.4°F |
| 9% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 74°F (24°C) |
Geography
| Elevation | 913 ft (278 m) |
| Area | 2.8 sq mi (7.3 km²) |
| Population Density | 1,067/sq mi |
| Coordinates | 42.5788°N, 88.5457°W |
| Timezone | America/Chicago |
| County | Walworth County County |
| Nearest Airport | Southern Wisconsin Regional (JVL) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 82.0% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0501 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 74.8 / 100 |
| Social Vulnerability | 20.8 / 100 |
| Community Resilience | 80.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 1.9 in | Coldest |
| February | 26°F (-4°C) | 1.9 in | Driest |
| March | 36°F (2°C) | 2.3 in | |
| April | 48°F (9°C) | 3.5 in | |
| May | 60°F (16°C) | 4.1 in | |
| June | 70°F (21°C) | 4.8 in | Wettest |
| July | 74°F (24°C) | 3.7 in | Warmest |
| August | 72°F (22°C) | 3.3 in | |
| September | 65°F (18°C) | 3.7 in | |
| October | 52°F (11°C) | 3.0 in | |
| November | 39°F (4°C) | 2.5 in | |
| December | 28°F (-2°C) | 2.3 in |
Williams Bay has a seasonal temperature swing of 52°F / from 23°F in January to 74°F in July. Total annual precipitation is 37.0 inches, with June being the wettest month (4.8") and February the driest (1.9").