Wellington, IL
Full City Profile · Illinois · Iroquois County County
3.3
/5.0
B
Good
204
Population
850/sq mi density
$46,979
Median Income
$27,232 per capita
$73,900
Home Value
$106,378 Zillow
52°F
Avg Temperature
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$46,979 median income, 5.0% unemployment
A+
Affordability
5.0 / 5.0
$73,900 home value, /mo rent
D
Education
1.6 / 5.0
7.5% bachelor's degree or higher
Wellington experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 26°F in January while summers reach 75°F in July. Annual precipitation totals 40.9 inches. The area receives 20.3 inches of snow annually.
Temperature
26°F Jan (-3°C)
75°F Jul (24°C)
| Annual Average | 52.3°F |
| 3% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 75°F (24°C) |
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
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 | 26°F (-3°C) | 2.1 in | Coldest |
| February | 30°F (-1°C) | 2.0 in | Driest |
| March | 41°F (5°C) | 2.8 in | |
| April | 53°F (11°C) | 4.0 in | |
| May | 63°F (17°C) | 4.8 in | |
| June | 72°F (22°C) | 4.9 in | Wettest |
| July | 75°F (24°C) | 4.6 in | Warmest |
| August | 73°F (23°C) | 4.0 in | |
| September | 67°F (19°C) | 3.4 in | |
| October | 55°F (13°C) | 3.4 in | |
| November | 42°F (5°C) | 2.9 in | |
| December | 31°F (-1°C) | 2.1 in |
Wellington has a seasonal temperature swing of 49°F / from 26°F in January to 75°F in July. Total annual precipitation is 40.9 inches, with June being the wettest month (4.9") and February the driest (2.0").