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Vergennes, IL
Full City Profile · Illinois · Jackson County County
2.7
/5.0
C+
Fair
274
Population
783/sq mi density
$48,594
Median Income
$27,568 per capita
$92,000
Home Value
$124,935 Zillow
$950
Median Rent
25.4% income on rent
56°F
Avg Temperature
305 sunny days/yr
503
Violent Crime/100K
377 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$48,594 median income, 6.7% unemployment
A+
Affordability
5.0 / 5.0
$92,000 home value, $950/mo rent
F
Safety
1.0 / 5.0
503 violent crimes/100K (32% above avg)
D
Education
1.6 / 5.0
7.2% bachelor's degree or higher
Vergennes enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 33°F in January while summers reach 78°F in July. The area gets 305 sunny days per year. Annual precipitation totals 44.0 inches. Air quality is rated Good with a median AQI of 43.
Temperature
33°F Jan (1°C)
78°F Jul (26°C)
| Annual Average | 56.4°F |
| 4% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 305 days/yr |
Geography
| Elevation | 392 ft (119 m) |
| Area | 0.1 sq mi (0.4 km²) |
| Population Density | 783/sq mi |
| Coordinates | 37.9019°N, 89.3402°W |
| Timezone | America/Chicago |
| County | Jackson County County |
| Nearest Airport | Cape Girardeau Regional (CGI) 51 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 87.1 / 100 |
| Social Vulnerability | 76.6 / 100 |
| Community Resilience | 65.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 2.5 in | Coldest, Driest |
| February | 35°F (2°C) | 2.7 in | |
| March | 46°F (8°C) | 4.4 in | |
| April | 56°F (13°C) | 4.1 in | |
| May | 65°F (19°C) | 4.6 in | Wettest |
| June | 74°F (23°C) | 4.0 in | |
| July | 78°F (26°C) | 3.8 in | Warmest |
| August | 76°F (25°C) | 3.5 in | |
| September | 69°F (21°C) | 3.2 in | |
| October | 58°F (14°C) | 3.1 in | |
| November | 46°F (8°C) | 4.1 in | |
| December | 36°F (2°C) | 3.6 in |
Vergennes has a seasonal temperature swing of 45°F / from 33°F in January to 78°F in July. Total annual precipitation is 43.7 inches, with May being the wettest month (4.6") and January the driest (2.5").