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Potosi, WI
Full City Profile · Wisconsin · Grant County County
3.2
/5.0
B
Good
616
Population
371/sq mi density
$70,000
Median Income
$35,762 per capita
$183,200
Home Value
$237,125 Zillow
$719
Median Rent
22.0% income on rent
48°F
Avg Temperature
260 sunny days/yr
369
Violent Crime/100K
1,555 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$70,000 median income, 0.8% unemployment
A+
Affordability
5.0 / 5.0
$183,200 home value, $719/mo rent
F
Safety
1.0 / 5.0
369 violent crimes/100K
C+
Education
2.5 / 5.0
19.0% bachelor's degree or higher
Potosi experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 19°F in January while summers reach 74°F in July. The area gets 260 sunny days per year. Annual precipitation totals 38.8 inches. The area receives 36.1 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
19°F Jan (-7°C)
74°F Jul (24°C)
| Annual Average | 48.4°F |
| 10% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 927 ft (283 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 371/sq mi |
| Coordinates | 42.6855°N, 90.7077°W |
| Timezone | America/Chicago |
| County | Grant County County |
| Nearest Airport | Dubuque Regional (DBQ) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| PM2.5 (Fine Particles) | 10.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 61.1 / 100 |
| Social Vulnerability | 47.1 / 100 |
| Community Resilience | 63.9 / 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 Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 0.9 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.1 in | |
| March | 34°F (1°C) | 2.2 in | |
| April | 47°F (8°C) | 3.3 in | |
| May | 59°F (15°C) | 3.7 in | |
| June | 68°F (20°C) | 4.4 in | Wettest |
| July | 74°F (24°C) | 4.0 in | Warmest |
| August | 70°F (21°C) | 4.3 in | |
| September | 62°F (17°C) | 3.6 in | |
| October | 50°F (10°C) | 2.4 in | |
| November | 35°F (2°C) | 2.4 in | |
| December | 23°F (-5°C) | 1.4 in |
Potosi has a seasonal temperature swing of 56°F / from 19°F in January to 74°F in July. Total annual precipitation is 33.6 inches, with June being the wettest month (4.4") and January the driest (0.9").