Sheldon, IL
Full City Profile · Illinois · Iroquois County County
3.0
/5.0
B
Good
1,309
Population
1,745/sq mi density
$43,942
Median Income
$33,922 per capita
$75,200
Home Value
$66,047 Zillow
$738
Median Rent
28.4% income on rent
51°F
Avg Temperature
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
C
Economy
2.4 / 5.0
$43,942 median income, 16.4% unemployment
A+
Affordability
5.0 / 5.0
$75,200 home value, $738/mo rent
D
Education
1.6 / 5.0
6.9% bachelor's degree or higher
Sheldon experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 25°F in January while summers reach 74°F in July. Annual precipitation totals 38.4 inches. The area receives 17.1 inches of snow annually.
Temperature
25°F Jan (-4°C)
74°F Jul (23°C)
| Annual Average | 51.0°F |
| 6% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 688 ft (210 m) |
| Area | 0.8 sq mi (1.9 km²) |
| Population Density | 1,745/sq mi |
| Coordinates | 40.7710°N, 87.5658°W |
| Timezone | America/Chicago |
| County | Iroquois County County |
| Nearest Airport | Vermilion Regional (DNV) 39 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 74.0 / 100 |
| Social Vulnerability | 34.0 / 100 |
| Community Resilience | 65.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 118 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.1 in | Coldest |
| February | 28°F (-2°C) | 2.0 in | Driest |
| March | 40°F (4°C) | 2.4 in | |
| April | 51°F (10°C) | 3.7 in | |
| May | 62°F (17°C) | 4.4 in | |
| June | 71°F (22°C) | 5.0 in | Wettest |
| July | 74°F (23°C) | 4.2 in | Warmest |
| August | 72°F (22°C) | 3.5 in | |
| September | 65°F (19°C) | 3.2 in | |
| October | 54°F (12°C) | 3.2 in | |
| November | 41°F (5°C) | 2.7 in | |
| December | 30°F (-1°C) | 2.1 in |
Sheldon has a seasonal temperature swing of 49°F / from 25°F in January to 74°F in July. Total annual precipitation is 38.4 inches, with June being the wettest month (5.0") and February the driest (2.0").