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Winnebago, IL
Full City Profile · Illinois · Winnebago County County
3.4
/5.0
B
Good
2,896
Population
1,501/sq mi density
$82,813
Median Income
$43,296 per capita
$180,300
Home Value
$271,934 Zillow
$941
Median Rent
35.3% income on rent
49°F
Avg Temperature
260 sunny days/yr
34
Violent Crime/100K
1,114 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$82,813 median income, 1.4% unemployment
A+
Affordability
5.0 / 5.0
$180,300 home value, $941/mo rent
F
Safety
1.0 / 5.0
34 violent crimes/100K
B
Education
3.2 / 5.0
26.9% bachelor's degree or higher
Winnebago experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 22°F in January while summers reach 74°F in July. The area gets 260 sunny days per year. Annual precipitation totals 37.2 inches. The area receives 37.1 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
22°F Jan (-6°C)
74°F Jul (23°C)
| Annual Average | 49.4°F |
| 9% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 870 ft (265 m) |
| Area | 0.8 sq mi (1.9 km²) |
| Population Density | 1,501/sq mi |
| Coordinates | 42.2671°N, 89.2340°W |
| Timezone | America/Chicago |
| County | Winnebago County County |
| Nearest Airport | Chicago/Rockford International (RFD) 9 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
| Good Days % | 69.0% |
| Unhealthy Days | 3 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0475 ppm |
| PM2.5 (Fine Particles) | 10.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.4 / 100 |
| Social Vulnerability | 38.9 / 100 |
| Community Resilience | 68.5 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 1.3 in | Coldest |
| February | 23°F (-5°C) | 1.1 in | Driest |
| March | 35°F (2°C) | 2.4 in | |
| April | 47°F (8°C) | 3.5 in | |
| May | 59°F (15°C) | 3.7 in | |
| June | 68°F (20°C) | 4.4 in | Wettest |
| July | 74°F (23°C) | 3.8 in | Warmest |
| August | 70°F (21°C) | 4.1 in | |
| September | 62°F (17°C) | 3.8 in | |
| October | 51°F (10°C) | 2.7 in | |
| November | 37°F (3°C) | 2.6 in | |
| December | 24°F (-5°C) | 2.0 in |
Winnebago has a seasonal temperature swing of 52°F / from 22°F in January to 74°F in July. Total annual precipitation is 35.4 inches, with June being the wettest month (4.4") and February the driest (1.1").