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St. Charles, MN
Full City Profile · Minnesota · Olmsted County County
3.7
/5.0
B+
Good
4,021
Population
1,055/sq mi density
$96,544
Median Income
$50,155 per capita
$231,300
Home Value
$368,746 Zillow
$941
Median Rent
25.4% income on rent
44°F
Avg Temperature
260 sunny days/yr
80
Violent Crime/100K
981 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$96,544 median income, 1.6% unemployment
A+
Affordability
5.0 / 5.0
$231,300 home value, $941/mo rent
F
Safety
1.0 / 5.0
80 violent crimes/100K
B+
Education
3.8 / 5.0
35.3% bachelor's degree or higher
St. Charles has a cool climate with an average annual temperature of 44°F (7°C). Winters average 14°F in January while summers reach 70°F in July. The area gets 260 sunny days per year. Annual precipitation totals 36.8 inches. The area receives 42.2 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
14°F Jan (-10°C)
70°F Jul (21°C)
| Annual Average | 43.8°F |
| 19% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 1,132 ft (345 m) |
| Area | 3.8 sq mi (9.9 km²) |
| Population Density | 1,055/sq mi |
| Coordinates | 43.9687°N, 92.0593°W |
| Timezone | America/Chicago |
| County | Olmsted County County |
| Nearest Airport | Rochester International (RST) 22 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0477 ppm |
| PM2.5 (Fine Particles) | 8.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 82.4 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 99.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | No Rating |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| 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 | 14°F (-10°C) | 0.9 in | Coldest |
| February | 19°F (-7°C) | 0.8 in | Driest |
| March | 31°F (-0°C) | 2.0 in | |
| April | 46°F (8°C) | 3.0 in | |
| May | 58°F (14°C) | 3.8 in | |
| June | 67°F (20°C) | 4.2 in | |
| July | 70°F (21°C) | 4.4 in | Warmest, Wettest |
| August | 69°F (20°C) | 4.3 in | |
| September | 60°F (16°C) | 4.0 in | |
| October | 48°F (9°C) | 2.6 in | |
| November | 33°F (0°C) | 1.8 in | |
| December | 19°F (-7°C) | 1.3 in |
St. Charles has a seasonal temperature swing of 56°F / from 14°F in January to 70°F in July. Total annual precipitation is 33.0 inches, with July being the wettest month (4.4") and February the driest (0.8").