Prairietown, IL
Full City Profile · Illinois · Madison County County
3.8
/5.0
B+
Good
189
Population
995/sq mi density
$84,766
Median Income
$40,812 per capita
$109,500
Home Value
$171,282 Zillow
56°F
Avg Temperature
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$84,766 median income, 13.9% unemployment
A+
Affordability
5.0 / 5.0
$109,500 home value, /mo rent
B
Education
3.0 / 5.0
25.2% bachelor's degree or higher
Prairietown enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 30°F in January while summers reach 78°F in July. Annual precipitation totals 45.8 inches. The area receives 10.8 inches of snow annually. Air quality is rated Good with a median AQI of 49.
Temperature
30°F Jan (-1°C)
78°F Jul (26°C)
| Annual Average | 55.7°F |
| 3% above US avg | |
| January Average | 30°F (-1°C) |
| July Average | 78°F (26°C) |
Geography
| Elevation | 579 ft (176 m) |
| Area | 0.2 sq mi (0.5 km²) |
| Population Density | 995/sq mi |
| Coordinates | 38.9665°N, 89.9235°W |
| Timezone | America/Chicago |
| County | Madison County County |
| Nearest Airport | St Louis Regional (ALN) 8 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 49.0 |
| Rating | Good |
| Good Days % | 52.7% |
| Unhealthy Days | 6 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0502 ppm |
| SO₂ (Sulfur Dioxide) | 1.30 ppb |
| PM2.5 (Fine Particles) | 9.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.4 / 100 |
| Social Vulnerability | 25.9 / 100 |
| Community Resilience | 86.2 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.8 in | Coldest |
| February | 35°F (1°C) | 2.3 in | Driest |
| March | 44°F (7°C) | 3.5 in | |
| April | 56°F (13°C) | 5.1 in | |
| May | 66°F (19°C) | 5.5 in | Wettest |
| June | 75°F (24°C) | 4.7 in | |
| July | 78°F (26°C) | 4.8 in | Warmest |
| August | 77°F (25°C) | 4.0 in | |
| September | 70°F (21°C) | 3.3 in | |
| October | 58°F (14°C) | 3.4 in | |
| November | 45°F (7°C) | 3.8 in | |
| December | 35°F (2°C) | 2.8 in |
Prairietown has a seasonal temperature swing of 48°F / from 30°F in January to 78°F in July. Total annual precipitation is 45.8 inches, with May being the wettest month (5.5") and February the driest (2.3").