All Countries
Mount Carroll, IL
Full City Profile · Illinois · Carroll County County
3.6
/5.0
B+
Good
1,515
Population
758/sq mi density
$59,167
Median Income
$32,272 per capita
$88,800
Home Value
$142,797 Zillow
$749
Median Rent
22.7% income on rent
49°F
Avg Temperature
246 sunny days/yr
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$59,167 median income, 1.7% unemployment
A+
Affordability
5.0 / 5.0
$88,800 home value, $749/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
C+
Education
2.8 / 5.0
23.0% bachelor's degree or higher
Mount Carroll experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 21°F in January while summers reach 73°F in July. The area gets 246 sunny days per year. Annual precipitation totals 40.3 inches. The area receives 33.4 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
21°F Jan (-6°C)
73°F Jul (23°C)
| Annual Average | 48.5°F |
| 10% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 793 ft (242 m) |
| Area | 2.0 sq mi (5.2 km²) |
| Population Density | 758/sq mi |
| Coordinates | 42.0948°N, 89.9769°W |
| Timezone | America/Chicago |
| County | Carroll County County |
| Nearest Airport | Dubuque Regional (DBQ) 43 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 39.0 / 100 |
| Social Vulnerability | 55.4 / 100 |
| Community Resilience | 69.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 1.4 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.4 in | |
| March | 35°F (2°C) | 2.6 in | |
| April | 47°F (9°C) | 3.6 in | |
| May | 59°F (15°C) | 4.3 in | |
| June | 68°F (20°C) | 4.6 in | Wettest |
| July | 73°F (23°C) | 3.7 in | Warmest |
| August | 70°F (21°C) | 4.4 in | |
| September | 62°F (17°C) | 3.7 in | |
| October | 51°F (10°C) | 2.8 in | |
| November | 37°F (3°C) | 2.8 in | |
| December | 24°F (-5°C) | 2.0 in |
Mount Carroll has a seasonal temperature swing of 52°F / from 21°F in January to 73°F in July. Total annual precipitation is 37.2 inches, with June being the wettest month (4.6") and January the driest (1.4").