All Countries
Allerton, IL
Full City Profile · Illinois · Edgar County County
3.4
/5.0
B
Good
217
Population
319/sq mi density
$51,667
Median Income
$33,432 per capita
$106,700
Home Value
$159,684 Zillow
$775
Median Rent
35.0% income on rent
52°F
Avg Temperature
293 sunny days/yr
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$51,667 median income, 4.0% unemployment
A+
Affordability
5.0 / 5.0
$106,700 home value, $775/mo rent
D
Education
2.0 / 5.0
11.9% bachelor's degree or higher
Allerton experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 25°F in January while summers reach 74°F in July. The area gets 293 sunny days per year. Annual precipitation totals 40.4 inches. The area receives 23.7 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
25°F Jan (-4°C)
74°F Jul (23°C)
| Annual Average | 51.5°F |
| 5% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 698 ft (213 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 319/sq mi |
| Coordinates | 39.9161°N, 87.9353°W |
| Timezone | America/Chicago |
| County | Edgar County County |
| Nearest Airport | Vermilion Regional (DNV) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 34.9 / 100 |
| Social Vulnerability | 32.6 / 100 |
| Community Resilience | 70.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.0 in | Coldest, Driest |
| February | 29°F (-2°C) | 2.0 in | |
| March | 41°F (5°C) | 3.2 in | |
| April | 52°F (11°C) | 3.9 in | |
| May | 63°F (17°C) | 4.3 in | |
| June | 72°F (22°C) | 4.1 in | |
| July | 74°F (23°C) | 4.5 in | Warmest, Wettest |
| August | 73°F (23°C) | 4.0 in | |
| September | 67°F (19°C) | 3.2 in | |
| October | 55°F (13°C) | 2.9 in | |
| November | 42°F (6°C) | 3.5 in | |
| December | 31°F (-1°C) | 2.9 in |
Allerton has a seasonal temperature swing of 49°F / from 25°F in January to 74°F in July. Total annual precipitation is 40.5 inches, with July being the wettest month (4.5") and January the driest (2.0").