Mercer, WI
Full City Profile · Wisconsin · Iron County County
3.5
/5.0
B+
Good
539
Population
121/sq mi density
$51,528
Median Income
$32,936 per capita
$209,100
Home Value
$316,652 Zillow
$525
Median Rent
26.9% income on rent
40°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good 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
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 10°F in January while summers reach 66°F in July. Annual precipitation totals 32.3 inches. The area receives 75.2 inches of snow annually.
Temperature
10°F Jan (-12°C)
66°F Jul (19°C)
| Annual Average | 39.9°F |
| 26% below US avg | |
| January Average | 10°F (-12°C) |
| July Average | 66°F (19°C) |
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
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 | 10°F (-12°C) | 1.2 in | Coldest |
| February | 14°F (-10°C) | 0.9 in | Driest |
| March | 25°F (-4°C) | 1.5 in | |
| April | 39°F (4°C) | 2.5 in | |
| May | 53°F (12°C) | 3.7 in | |
| June | 62°F (17°C) | 4.4 in | Wettest |
| July | 66°F (19°C) | 4.1 in | Warmest |
| August | 64°F (18°C) | 3.3 in | |
| September | 56°F (13°C) | 3.7 in | |
| October | 43°F (6°C) | 3.6 in | |
| November | 29°F (-2°C) | 1.9 in | |
| December | 17°F (-8°C) | 1.4 in |
Mercer has a seasonal temperature swing of 56°F / from 10°F in January to 66°F in July. Total annual precipitation is 32.3 inches, with June being the wettest month (4.4") and February the driest (0.9").