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Louisville, IL
Full City Profile · Illinois · Clay County County
2.8
/5.0
C+
Fair
1,288
Population
1,552/sq mi density
$44,318
Median Income
$23,224 per capita
$86,300
Home Value
$124,918 Zillow
$629
Median Rent
26.1% income on rent
56°F
Avg Temperature
293 sunny days/yr
60
Violent Crime/100K
2,351 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.5 / 5.0
$44,318 median income, 6.2% unemployment
A+
Affordability
5.0 / 5.0
$86,300 home value, $629/mo rent
F
Safety
1.0 / 5.0
60 violent crimes/100K
C+
Education
2.5 / 5.0
19.1% bachelor's degree or higher
Louisville 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 | 474 ft (144 m) |
| Area | 0.8 sq mi (1.9 km²) |
| Population Density | 1,552/sq mi |
| Coordinates | 38.7694°N, 88.5069°W |
| Timezone | America/Chicago |
| County | Clay County County |
| Nearest Airport | Lawrenceville-Vincennes International (LWV) 49 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 41.1 / 100 |
| Social Vulnerability | 52.0 / 100 |
| Community Resilience | 88.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively 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) | 2.2 in | Coldest, Driest |
| February | 33°F (0°C) | 2.4 in | |
| March | 44°F (6°C) | 4.1 in | |
| April | 54°F (12°C) | 3.9 in | |
| May | 64°F (18°C) | 4.3 in | Wettest |
| June | 73°F (23°C) | 4.1 in | |
| July | 77°F (25°C) | 3.9 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) | 3.7 in | |
| December | 34°F (1°C) | 3.5 in |
Louisville has a seasonal temperature swing of 45°F / from 32°F in January to 77°F in July. Total annual precipitation is 41.3 inches, with May being the wettest month (4.3") and January the driest (2.2").