All Countries
Dahlgren, IL
Full City Profile · Illinois · Hamilton County County
2.5
/5.0
C+
Fair
631
Population
619/sq mi density
$47,500
Median Income
$18,542 per capita
$68,800
Home Value
$140,131 Zillow
$814
Median Rent
29.1% income on rent
56°F
Avg Temperature
293 sunny days/yr
1,261
Violent Crime/100K
6,224 property/100K
C+
Overall
2.5 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.6 / 5.0
$47,500 median income, 7.2% unemployment
A+
Affordability
5.0 / 5.0
$68,800 home value, $814/mo rent
F
Safety
1.0 / 5.0
1,261 violent crimes/100K (232% above avg)
D
Education
1.6 / 5.0
7.1% bachelor's degree or higher
Dahlgren enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 78°F in July. The area gets 293 sunny days per year. Annual precipitation totals 47.1 inches. The area receives 13.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
32°F Jan (-0°C)
78°F Jul (25°C)
| Annual Average | 55.5°F |
| 3% above US avg | |
| January Average | 32°F (-0°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 516 ft (157 m) |
| Area | 0.4 sq mi (1.0 km²) |
| Population Density | 619/sq mi |
| Coordinates | 38.1981°N, 88.6847°W |
| Timezone | America/Chicago |
| County | Hamilton County County |
| Nearest Airport | Evansville Regional (EVV) 64 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0471 ppm |
| PM2.5 (Fine Particles) | 8.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 30.8 / 100 |
| Social Vulnerability | 15.8 / 100 |
| Community Resilience | 75.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (-0°C) | 2.5 in | Coldest, Driest |
| February | 34°F (1°C) | 2.7 in | |
| March | 45°F (7°C) | 4.3 in | |
| April | 55°F (13°C) | 4.3 in | |
| May | 65°F (18°C) | 4.5 in | Wettest |
| June | 74°F (23°C) | 3.9 in | |
| July | 78°F (25°C) | 3.6 in | Warmest |
| August | 76°F (24°C) | 3.2 in | |
| September | 69°F (21°C) | 3.1 in | |
| October | 57°F (14°C) | 3.0 in | |
| November | 45°F (7°C) | 4.2 in | |
| December | 35°F (2°C) | 3.5 in |
Dahlgren has a seasonal temperature swing of 46°F / from 32°F in January to 78°F in July. Total annual precipitation is 42.6 inches, with May being the wettest month (4.5") and January the driest (2.5").