Onalaska, WI
Full City Profile · Wisconsin · La Crosse County County
3.7
/5.0
B+
Good
18,909
Population
1,782/sq mi density
$84,898
Median Income
$50,428 per capita
$279,100
Home Value
$369,938 Zillow
$1,096
Median Rent
25.7% income on rent
49°F
Avg Temperature
42
Violent Crime/100K
2,308 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$84,898 median income, 3.3% unemployment
A+
Affordability
4.8 / 5.0
$279,100 home value, $1,096/mo rent
F
Safety
1.0 / 5.0
42 violent crimes/100K
A
Education
4.3 / 5.0
41.4% bachelor's degree or higher
Onalaska experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 19°F in January while summers reach 75°F in July. Annual precipitation totals 35.2 inches. The area receives 46.3 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
19°F Jan (-7°C)
75°F Jul (24°C)
| Annual Average | 48.8°F |
| 10% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 743 ft (226 m) |
| Area | 10.7 sq mi (27.8 km²) |
| Population Density | 1,782/sq mi |
| Coordinates | 43.8897°N, 91.2044°W |
| Timezone | America/Chicago |
| County | La Crosse County County |
| Nearest Airport | La Crosse Regional (LSE) 3 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
| Good Days % | 96.1% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0478 ppm |
| PM2.5 (Fine Particles) | 9.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 80.5 / 100 |
| Social Vulnerability | 16.3 / 100 |
| Community Resilience | 92.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
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) | 1.2 in | Driest |
| March | 36°F (2°C) | 2.0 in | |
| April | 49°F (9°C) | 3.8 in | |
| May | 61°F (16°C) | 4.3 in | |
| June | 71°F (22°C) | 5.1 in | Wettest |
| July | 75°F (24°C) | 4.2 in | Warmest |
| August | 73°F (23°C) | 3.9 in | |
| September | 65°F (18°C) | 3.6 in | |
| October | 52°F (11°C) | 2.5 in | |
| November | 38°F (3°C) | 1.9 in | |
| December | 25°F (-4°C) | 1.5 in |
Onalaska has a seasonal temperature swing of 56°F / from 19°F in January to 75°F in July. Total annual precipitation is 35.2 inches, with June being the wettest month (5.1") and February the driest (1.2").