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Germantown, WI
Full City Profile · Wisconsin · Washington County County
3.9
/5.0
B+
Good
20,940
Population
609/sq mi density
$104,337
Median Income
$52,888 per capita
$356,700
Home Value
$439,786 Zillow
$1,310
Median Rent
24.0% income on rent
46°F
Avg Temperature
260 sunny days/yr
80
Violent Crime/100K
2,252 property/100K
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$104,337 median income, 1.4% unemployment
A+
Affordability
4.8 / 5.0
$356,700 home value, $1,310/mo rent
F
Safety
1.0 / 5.0
80 violent crimes/100K
A+
Education
4.9 / 5.0
48.3% bachelor's degree or higher
Germantown experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 19°F in January while summers reach 70°F in July. The area gets 260 sunny days per year. Annual precipitation totals 34.4 inches. The area receives 54.3 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
19°F Jan (-7°C)
70°F Jul (21°C)
| Annual Average | 45.8°F |
| 15% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 849 ft (259 m) |
| Area | 34.4 sq mi (89.1 km²) |
| Population Density | 609/sq mi |
| Coordinates | 43.2345°N, 88.1250°W |
| Timezone | America/Chicago |
| County | Washington County County |
| Nearest Airport | General Mitchell International (MKE) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 68.3 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 96.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| 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)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 1.3 in | Coldest |
| February | 23°F (-5°C) | 1.1 in | Driest |
| March | 33°F (1°C) | 2.1 in | |
| April | 45°F (7°C) | 3.1 in | |
| May | 56°F (13°C) | 2.8 in | |
| June | 65°F (19°C) | 3.5 in | |
| July | 70°F (21°C) | 3.7 in | Warmest |
| August | 69°F (20°C) | 3.8 in | |
| September | 61°F (16°C) | 3.9 in | Wettest |
| October | 50°F (10°C) | 2.5 in | |
| November | 36°F (2°C) | 2.3 in | |
| December | 24°F (-5°C) | 1.8 in |
Germantown has a seasonal temperature swing of 51°F / from 19°F in January to 70°F in July. Total annual precipitation is 31.9 inches, with September being the wettest month (3.9") and February the driest (1.1").