Hartland, WI
Full City Profile · Wisconsin · Waukesha County County
3.5
/5.0
B+
Good
9,716
Population
1,779/sq mi density
$87,297
Median Income
$57,359 per capita
$358,000
Home Value
$672,143 Zillow
$1,104
Median Rent
28.9% income on rent
47°F
Avg Temperature
68
Violent Crime/100K
351 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$87,297 median income, 4.9% unemployment
A
Affordability
4.4 / 5.0
$358,000 home value, $1,104/mo rent
F
Safety
1.0 / 5.0
68 violent crimes/100K
A
Education
4.5 / 5.0
43.2% bachelor's degree or higher
Hartland 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 36.0 inches. The area receives 36.9 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 | 940 ft (287 m) |
| Area | 5.2 sq mi (13.4 km²) |
| Population Density | 1,779/sq mi |
| Coordinates | 43.1024°N, 88.3356°W |
| Timezone | America/Chicago |
| County | Waukesha County County |
| Nearest Airport | General Mitchell International (MKE) 25 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, Driest |
| February | 23°F (-5°C) | 1.7 in | |
| March | 34°F (1°C) | 1.9 in | |
| April | 45°F (7°C) | 3.7 in | |
| May | 57°F (14°C) | 4.0 in | |
| June | 67°F (19°C) | 4.9 in | Wettest |
| July | 71°F (22°C) | 4.0 in | Warmest |
| August | 69°F (21°C) | 4.2 in | |
| September | 62°F (17°C) | 3.3 in | |
| October | 50°F (10°C) | 2.9 in | |
| November | 37°F (3°C) | 2.2 in | |
| December | 26°F (-4°C) | 1.7 in |
Hartland has a seasonal temperature swing of 51°F / from 20°F in January to 71°F in July. Total annual precipitation is 36.0 inches, with June being the wettest month (4.9") and January the driest (1.6").