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Twin Lakes, WI
Full City Profile · Wisconsin · McHenry County County
3.3
/5.0
B
Good
6,351
Population
745/sq mi density
$85,800
Median Income
$45,716 per capita
$257,000
Home Value
$385,420 Zillow
$1,034
Median Rent
21.2% income on rent
47°F
Avg Temperature
260 sunny days/yr
276
Violent Crime/100K
633 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$85,800 median income, 3.3% unemployment
A+
Affordability
5.0 / 5.0
$257,000 home value, $1,034/mo rent
F
Safety
1.0 / 5.0
276 violent crimes/100K
C+
Education
2.9 / 5.0
23.3% bachelor's degree or higher
Twin Lakes experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 21°F in January while summers reach 71°F in July. The area gets 260 sunny days per year. Annual precipitation totals 36.6 inches. Air quality is rated Good with a median AQI of 38.
Temperature
21°F Jan (-6°C)
71°F Jul (21°C)
| Annual Average | 47.0°F |
| 13% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 71°F (21°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 874 ft (266 m) |
| Area | 8.5 sq mi (22.1 km²) |
| Population Density | 745/sq mi |
| Coordinates | 42.5156°N, 88.2504°W |
| Timezone | America/Chicago |
| County | McHenry County County |
| Nearest Airport | Kenosha Regional (ENW) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0484 ppm |
| PM2.5 (Fine Particles) | 9.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.8 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 84.0 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 145 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 1.6 in | Coldest |
| February | 24°F (-5°C) | 1.2 in | Driest |
| March | 34°F (1°C) | 2.5 in | |
| April | 46°F (8°C) | 3.5 in | |
| May | 57°F (14°C) | 3.2 in | |
| June | 67°F (19°C) | 3.9 in | |
| July | 71°F (21°C) | 4.2 in | Warmest, Wettest |
| August | 70°F (21°C) | 4.0 in | |
| September | 62°F (17°C) | 3.8 in | |
| October | 51°F (10°C) | 2.5 in | |
| November | 37°F (3°C) | 2.6 in | |
| December | 25°F (-4°C) | 2.1 in |
Twin Lakes has a seasonal temperature swing of 50°F / from 21°F in January to 71°F in July. Total annual precipitation is 35.0 inches, with July being the wettest month (4.2") and February the driest (1.2").