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Kaskaskia, IL
Full City Profile · Illinois · Perry County County
1.8
/5.0
D
Poor
34
Population
309/sq mi density
$178,100
Home Value
$112,761 Zillow
56°F
Avg Temperature
305 sunny days/yr
154
Violent Crime/100K
891 property/100K
D
Overall
1.8 / 5.0
Below average overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
154 violent crimes/100K
C+
Education
2.5 / 5.0
18.8% bachelor's degree or higher
Kaskaskia enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 79°F in July. The area gets 305 sunny days per year. Annual precipitation totals 42.8 inches. The area receives 4.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
32°F Jan (0°C)
79°F Jul (26°C)
| Annual Average | 56.4°F |
| 4% above US avg | |
| January Average | 32°F (0°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 305 days/yr |
Geography
| Elevation | 375 ft (114 m) |
| Area | 0.1 sq mi (0.3 km²) |
| Population Density | 309/sq mi |
| Coordinates | 37.9213°N, 89.9163°W |
| Timezone | America/Chicago |
| County | Perry County County |
| Nearest Airport | Farmington Regional (FAM) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0492 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 46.2 / 100 |
| Social Vulnerability | 14.4 / 100 |
| Community Resilience | 79.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively 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 | 35°F (2°C) | 2.5 in | |
| March | 45°F (7°C) | 4.1 in | |
| April | 56°F (13°C) | 3.8 in | |
| May | 65°F (19°C) | 4.3 in | Wettest |
| June | 74°F (23°C) | 3.7 in | |
| July | 79°F (26°C) | 4.0 in | Warmest |
| August | 76°F (25°C) | 3.5 in | |
| September | 70°F (21°C) | 3.5 in | |
| October | 58°F (15°C) | 2.9 in | |
| November | 46°F (8°C) | 4.0 in | |
| December | 36°F (2°C) | 3.5 in |
Kaskaskia has a seasonal temperature swing of 47°F / from 32°F in January to 79°F in July. Total annual precipitation is 41.8 inches, with May being the wettest month (4.3") and January the driest (2.2").