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Johnsonville, IL
Full City Profile · Illinois · Wayne County County
2.1
/5.0
C
Fair
37
Population
176/sq mi density
$36,250
Median Income
$19,100 per capita
56°F
Avg Temperature
293 sunny days/yr
60
Violent Crime/100K
2,351 property/100K
C
Overall
2.1 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.5 / 5.0
$36,250 median income, 0.0% unemployment
F
Safety
1.0 / 5.0
60 violent crimes/100K
C+
Education
2.8 / 5.0
22.7% bachelor's degree or higher
Johnsonville enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 77°F in July. The area gets 293 sunny days per year. Annual precipitation totals 46.4 inches. The area receives 8.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
32°F Jan (-0°C)
77°F Jul (25°C)
| Annual Average | 56.1°F |
| 4% above US avg | |
| January Average | 32°F (-0°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 546 ft (166 m) |
| Area | 0.1 sq mi (0.2 km²) |
| Population Density | 176/sq mi |
| Coordinates | 38.5209°N, 88.5382°W |
| Timezone | America/Chicago |
| County | Wayne County County |
| Nearest Airport | Lawrenceville-Vincennes International (LWV) 53 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 40.7 / 100 |
| Social Vulnerability | 32.0 / 100 |
| Community Resilience | 53.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| 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) | 2.3 in | Coldest, Driest |
| February | 33°F (1°C) | 2.5 in | |
| March | 44°F (7°C) | 4.3 in | |
| April | 55°F (13°C) | 4.1 in | |
| May | 64°F (18°C) | 4.5 in | Wettest |
| June | 73°F (23°C) | 4.1 in | |
| July | 77°F (25°C) | 3.8 in | Warmest |
| August | 75°F (24°C) | 3.2 in | |
| September | 68°F (20°C) | 3.0 in | |
| October | 57°F (14°C) | 3.0 in | |
| November | 45°F (7°C) | 3.9 in | |
| December | 34°F (1°C) | 3.6 in |
Johnsonville has a seasonal temperature swing of 45°F / from 32°F in January to 77°F in July. Total annual precipitation is 42.2 inches, with May being the wettest month (4.5") and January the driest (2.3").