Junction City, IL
Full City Profile · Illinois · Clinton County County
2.7
/5.0
C+
Fair
753
Population
1,107/sq mi density
$53,333
Median Income
$20,729 per capita
$71,300
Home Value
$78,765 Zillow
$959
Median Rent
32.5% income on rent
55°F
Avg Temperature
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
D
Economy
1.9 / 5.0
$53,333 median income, 9.7% unemployment
A+
Affordability
5.0 / 5.0
$71,300 home value, $959/mo rent
F
Education
1.2 / 5.0
2.9% bachelor's degree or higher
Junction City experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 30°F in January while summers reach 77°F in July. Annual precipitation totals 45.3 inches. The area receives 6.5 inches of snow annually.
Temperature
30°F Jan (-1°C)
77°F Jul (25°C)
| Annual Average | 54.7°F |
| 1% above US avg | |
| January Average | 30°F (-1°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 488 ft (149 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 1,107/sq mi |
| Coordinates | 38.5755°N, 89.1268°W |
| Timezone | America/Chicago |
| County | Clinton County County |
| Nearest Airport | St Louis Regional (ALN) 54 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 65.6 / 100 |
| Social Vulnerability | 27.6 / 100 |
| Community Resilience | 88.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.1 in | Coldest |
| February | 34°F (1°C) | 2.5 in | Driest |
| March | 44°F (6°C) | 3.8 in | |
| April | 55°F (13°C) | 5.0 in | |
| May | 64°F (18°C) | 5.1 in | Wettest |
| June | 73°F (23°C) | 4.7 in | |
| July | 77°F (25°C) | 3.9 in | Warmest |
| August | 75°F (24°C) | 3.1 in | |
| September | 68°F (20°C) | 3.5 in | |
| October | 57°F (14°C) | 3.6 in | |
| November | 45°F (7°C) | 4.0 in | |
| December | 34°F (1°C) | 3.0 in |
Junction City has a seasonal temperature swing of 47°F / from 30°F in January to 77°F in July. Total annual precipitation is 45.3 inches, with May being the wettest month (5.1") and February the driest (2.5").