All Countries
Olney, IL
Full City Profile · Illinois · Richland County County
3.1
/5.0
B
Good
8,864
Population
1,279/sq mi density
$57,997
Median Income
$30,458 per capita
$96,900
Home Value
$136,320 Zillow
$769
Median Rent
27.3% income on rent
54°F
Avg Temperature
293 sunny days/yr
398
Violent Crime/100K
2,330 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$57,997 median income, 3.9% unemployment
A+
Affordability
5.0 / 5.0
$96,900 home value, $769/mo rent
F
Safety
1.0 / 5.0
398 violent crimes/100K (5% above avg)
C+
Education
2.6 / 5.0
20.1% bachelor's degree or higher
Olney experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 29°F in January while summers reach 76°F in July. The area gets 293 sunny days per year. Annual precipitation totals 48.8 inches. The area receives 10.5 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
29°F Jan (-2°C)
76°F Jul (25°C)
| Annual Average | 54.2°F |
| 0% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 487 ft (148 m) |
| Area | 6.9 sq mi (17.9 km²) |
| Population Density | 1,279/sq mi |
| Coordinates | 38.7281°N, 88.0842°W |
| Timezone | America/Chicago |
| County | Richland County County |
| Nearest Airport | Lawrenceville-Vincennes International (LWV) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 46.7 / 100 |
| Social Vulnerability | 66.9 / 100 |
| Community Resilience | 88.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively 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 | 29°F (-2°C) | 2.5 in | Coldest, Driest |
| February | 33°F (1°C) | 2.5 in | |
| March | 44°F (7°C) | 4.2 in | |
| April | 54°F (12°C) | 4.3 in | |
| May | 64°F (18°C) | 4.5 in | Wettest |
| June | 73°F (23°C) | 4.1 in | |
| July | 76°F (25°C) | 4.1 in | Warmest |
| August | 75°F (24°C) | 3.5 in | |
| September | 68°F (20°C) | 3.1 in | |
| October | 57°F (14°C) | 3.2 in | |
| November | 45°F (7°C) | 4.1 in | |
| December | 34°F (1°C) | 3.5 in |
Olney has a seasonal temperature swing of 47°F / from 29°F in January to 76°F in July. Total annual precipitation is 43.4 inches, with May being the wettest month (4.5") and January the driest (2.5").