All Countries
Mercer, WI
Full City Profile · Wisconsin · Iron County County
2.9
/5.0
C+
Fair
539
Population
121/sq mi density
$51,528
Median Income
$32,936 per capita
$209,100
Home Value
$303,931 Zillow
$525
Median Rent
26.9% income on rent
40°F
Avg Temperature
253 sunny days/yr
395
Violent Crime/100K
2,961 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$51,528 median income, 0.0% unemployment
A
Affordability
4.4 / 5.0
$209,100 home value, $525/mo rent
F
Safety
1.0 / 5.0
395 violent crimes/100K (4% above avg)
C
Education
2.3 / 5.0
16.1% bachelor's degree or higher
Mercer has a cool climate with an average annual temperature of 40°F (4°C). Winters average 11°F in January while summers reach 66°F in July. The area gets 253 sunny days per year. Air quality is rated Good with a median AQI of 38.
Temperature
11°F Jan (-12°C)
66°F Jul (19°C)
| Annual Average | 40.2°F |
| 26% below US avg | |
| January Average | 11°F (-12°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 253 days/yr |
Geography
| Elevation | 1,598 ft (487 m) |
| Area | 5.5 sq mi (14.2 km²) |
| Population Density | 121/sq mi |
| Coordinates | 46.1613°N, 90.0418°W |
| Timezone | America/Chicago |
| County | Iron County County |
| Nearest Airport | Rice Lake Regional/Carl's Field (RIE) 98 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 11.5 / 100 |
| Social Vulnerability | 76.1 / 100 |
| Community Resilience | 31.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 11°F (-12°C) | 1.4 in | Coldest |
| February | 15°F (-10°C) | 1.0 in | Driest |
| March | 25°F (-4°C) | 1.8 in | |
| April | 39°F (4°C) | 2.3 in | |
| May | 52°F (11°C) | 3.7 in | |
| June | 61°F (16°C) | 4.0 in | |
| July | 66°F (19°C) | 3.9 in | Warmest |
| August | 64°F (18°C) | 4.3 in | Wettest |
| September | 55°F (13°C) | 4.1 in | |
| October | 44°F (7°C) | 2.9 in | |
| November | 29°F (-2°C) | 2.2 in | |
| December | 16°F (-9°C) | 1.7 in |
Mercer has a seasonal temperature swing of 55°F / from 11°F in January to 66°F in July. Total annual precipitation is 33.1 inches, with August being the wettest month (4.3") and February the driest (1.0").