All Countries
Clayton, IL
Full City Profile · Illinois · Schuyler County County
3.2
/5.0
B
Good
597
Population
678/sq mi density
$63,438
Median Income
$31,182 per capita
$90,000
Home Value
$142,115 Zillow
$578
Median Rent
13.8% income on rent
52°F
Avg Temperature
275 sunny days/yr
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.0 / 5.0
$63,438 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$90,000 home value, $578/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
F
Education
1.4 / 5.0
5.5% bachelor's degree or higher
Clayton experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 25°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 40.9 inches. Air quality is rated Good with a median AQI of 43.
Temperature
25°F Jan (-4°C)
75°F Jul (24°C)
| Annual Average | 51.7°F |
| 4% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 731 ft (223 m) |
| Area | 0.3 sq mi (0.9 km²) |
| Population Density | 678/sq mi |
| Coordinates | 40.0306°N, 90.9580°W |
| Timezone | America/Chicago |
| County | Schuyler County County |
| Nearest Airport | Quincy Regional-Baldwin Field (UIN) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 11.4 / 100 |
| Social Vulnerability | 71.6 / 100 |
| Community Resilience | 63.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| 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 | 25°F (-4°C) | 1.4 in | Coldest, Driest |
| February | 29°F (-2°C) | 1.5 in | |
| March | 41°F (5°C) | 3.0 in | |
| April | 52°F (11°C) | 3.9 in | |
| May | 63°F (17°C) | 4.5 in | Wettest |
| June | 72°F (22°C) | 3.8 in | |
| July | 75°F (24°C) | 4.3 in | Warmest |
| August | 74°F (23°C) | 3.5 in | |
| September | 66°F (19°C) | 4.1 in | |
| October | 55°F (13°C) | 3.1 in | |
| November | 41°F (5°C) | 3.0 in | |
| December | 29°F (-1°C) | 2.3 in |
Clayton has a seasonal temperature swing of 50°F / from 25°F in January to 75°F in July. Total annual precipitation is 38.2 inches, with May being the wettest month (4.5") and January the driest (1.4").