All Countries
Wellington, IL
Full City Profile · Illinois · Iroquois County County
2.8
/5.0
C+
Fair
204
Population
850/sq mi density
$46,979
Median Income
$27,232 per capita
$73,900
Home Value
$122,709 Zillow
51°F
Avg Temperature
275 sunny days/yr
534
Violent Crime/100K
3,625 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$46,979 median income, 3.0% unemployment
A+
Affordability
5.0 / 5.0
$73,900 home value, /mo rent
F
Safety
1.0 / 5.0
534 violent crimes/100K (41% above avg)
D
Education
1.6 / 5.0
7.5% bachelor's degree or higher
Wellington experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 24°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 38.4 inches. The area receives 17.1 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
24°F Jan (-4°C)
74°F Jul (23°C)
| Annual Average | 50.7°F |
| 6% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 695 ft (212 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 850/sq mi |
| Coordinates | 40.5411°N, 87.6799°W |
| Timezone | America/Chicago |
| County | Iroquois County County |
| Nearest Airport | Vermilion Regional (DNV) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
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 | 145 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 1.6 in | Coldest, Driest |
| February | 28°F (-2°C) | 1.6 in | |
| March | 39°F (4°C) | 3.0 in | |
| April | 50°F (10°C) | 3.7 in | |
| May | 62°F (16°C) | 4.1 in | Wettest |
| June | 71°F (22°C) | 4.1 in | |
| July | 74°F (23°C) | 4.1 in | Warmest |
| August | 72°F (22°C) | 3.7 in | |
| September | 66°F (19°C) | 3.3 in | |
| October | 54°F (12°C) | 2.9 in | |
| November | 41°F (5°C) | 3.0 in | |
| December | 29°F (-2°C) | 2.6 in |
Wellington has a seasonal temperature swing of 50°F / from 24°F in January to 74°F in July. Total annual precipitation is 37.8 inches, with May being the wettest month (4.1") and January the driest (1.6").