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Lake Carroll, IL
Full City Profile · Illinois · Carroll County County
4.6
/5.0
A+
Excellent
763
Population
56/sq mi density
$101,250
Median Income
$53,714 per capita
$317,900
Home Value
$306,340 Zillow
49°F
Avg Temperature
246 sunny days/yr
A+
Overall
4.6 / 5.0
Strong
A+
Economy
5.0 / 5.0
$101,250 median income, 0.0% unemployment
A+
Affordability
4.9 / 5.0
$317,900 home value, /mo rent
B+
Education
4.0 / 5.0
36.9% bachelor's degree or higher
Lake 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 | 820 ft (250 m) |
| Area | 13.6 sq mi (35.1 km²) |
| Population Density | 56/sq mi |
| Coordinates | 42.1706°N, 89.8647°W |
| Timezone | America/Chicago |
| County | Carroll County County |
| Nearest Airport | Chicago/Rockford International (RFD) 39 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) | 1.3 in | Coldest, Driest |
| February | 23°F (-5°C) | 1.3 in | |
| March | 35°F (2°C) | 2.5 in | |
| April | 47°F (8°C) | 3.4 in | |
| May | 59°F (15°C) | 3.9 in | |
| June | 68°F (20°C) | 4.3 in | Wettest |
| July | 73°F (23°C) | 3.6 in | Warmest |
| August | 70°F (21°C) | 4.3 in | |
| September | 62°F (17°C) | 3.9 in | |
| October | 50°F (10°C) | 2.7 in | |
| November | 36°F (2°C) | 2.6 in | |
| December | 24°F (-5°C) | 1.9 in |
Lake Carroll has a seasonal temperature swing of 52°F / from 21°F in January to 73°F in July. Total annual precipitation is 35.6 inches, with June being the wettest month (4.3") and January the driest (1.3").