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Warren, IL
Full City Profile · Illinois · Stephenson County County
3.1
/5.0
B
Good
1,439
Population
1,397/sq mi density
$73,500
Median Income
$29,394 per capita
$104,900
Home Value
$113,085 Zillow
$752
Median Rent
24.5% income on rent
48°F
Avg Temperature
260 sunny days/yr
77
Violent Crime/100K
154 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$73,500 median income, 2.4% unemployment
A+
Affordability
5.0 / 5.0
$104,900 home value, $752/mo rent
F
Safety
1.0 / 5.0
77 violent crimes/100K
D
Education
2.0 / 5.0
11.9% bachelor's degree or higher
Warren experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 20°F in January while summers reach 72°F in July. The area gets 260 sunny days per year. Annual precipitation totals 38.7 inches. The area receives 35.7 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
20°F Jan (-7°C)
72°F Jul (22°C)
| Annual Average | 47.9°F |
| 11% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 981 ft (299 m) |
| Area | 1.0 sq mi (2.5 km²) |
| Population Density | 1,397/sq mi |
| Coordinates | 42.4948°N, 89.9912°W |
| Timezone | America/Chicago |
| County | Stephenson County County |
| Nearest Airport | Dubuque Regional (DBQ) 37 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 73.9 / 100 |
| Social Vulnerability | 56.7 / 100 |
| Community Resilience | 68.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 1.1 in | Coldest, Driest |
| February | 22°F (-5°C) | 1.2 in | |
| March | 34°F (1°C) | 2.4 in | |
| April | 47°F (8°C) | 3.4 in | |
| May | 59°F (15°C) | 3.7 in | |
| June | 68°F (20°C) | 4.2 in | |
| July | 72°F (22°C) | 3.7 in | Warmest |
| August | 69°F (21°C) | 4.2 in | Wettest |
| September | 62°F (16°C) | 4.0 in | |
| October | 50°F (10°C) | 2.7 in | |
| November | 36°F (2°C) | 2.4 in | |
| December | 23°F (-5°C) | 1.8 in |
Warren has a seasonal temperature swing of 52°F / from 20°F in January to 72°F in July. Total annual precipitation is 34.6 inches, with August being the wettest month (4.2") and January the driest (1.1").