Vienna, IL
Full City Profile · Illinois · Johnson County County
2.8
/5.0
C+
Fair
2,115
Population
745/sq mi density
$39,471
Median Income
$25,122 per capita
$77,400
Home Value
$178,273 Zillow
$616
Median Rent
29.0% income on rent
57°F
Avg Temperature
75
Violent Crime/100K
1,565 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.7 / 5.0
$39,471 median income, 0.6% unemployment
A+
Affordability
5.0 / 5.0
$77,400 home value, $616/mo rent
F
Safety
1.0 / 5.0
75 violent crimes/100K
C
Education
2.4 / 5.0
17.1% bachelor's degree or higher
Vienna enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 34°F in January while summers reach 77°F in July. Annual precipitation totals 50.5 inches. The area receives 7.2 inches of snow annually.
Temperature
34°F Jan (1°C)
77°F Jul (25°C)
| Annual Average | 57.2°F |
| 6% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 363 ft (111 m) |
| Area | 2.9 sq mi (7.4 km²) |
| Population Density | 745/sq mi |
| Coordinates | 37.4136°N, 88.8866°W |
| Timezone | America/Chicago |
| County | Johnson County County |
| Nearest Airport | Barkley Regional (PAH) 25 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 51.1 / 100 |
| Social Vulnerability | 82.0 / 100 |
| Community Resilience | 47.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| 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 | 34°F (1°C) | 3.8 in | Coldest |
| February | 39°F (4°C) | 3.6 in | Driest |
| March | 48°F (9°C) | 4.7 in | |
| April | 58°F (14°C) | 5.0 in | |
| May | 66°F (19°C) | 5.2 in | Wettest |
| June | 74°F (23°C) | 4.1 in | |
| July | 77°F (25°C) | 4.4 in | Warmest |
| August | 76°F (25°C) | 3.7 in | |
| September | 70°F (21°C) | 3.8 in | |
| October | 59°F (15°C) | 3.8 in | |
| November | 47°F (8°C) | 4.3 in | |
| December | 38°F (3°C) | 4.2 in |
Vienna has a seasonal temperature swing of 43°F / from 34°F in January to 77°F in July. Total annual precipitation is 50.5 inches, with May being the wettest month (5.2") and February the driest (3.6").