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Harrisburg, IL
Full City Profile · Illinois · Saline County County
2.9
/5.0
C+
Fair
8,608
Population
1,302/sq mi density
$48,488
Median Income
$26,786 per capita
$84,800
Home Value
$94,722 Zillow
$717
Median Rent
28.2% income on rent
57°F
Avg Temperature
305 sunny days/yr
661
Violent Crime/100K
2,714 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.8 / 5.0
$48,488 median income, 4.2% unemployment
A+
Affordability
5.0 / 5.0
$84,800 home value, $717/mo rent
F
Safety
1.0 / 5.0
661 violent crimes/100K (74% above avg)
C+
Education
2.6 / 5.0
20.1% bachelor's degree or higher
Harrisburg enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 33°F in January while summers reach 79°F in July. The area gets 305 sunny days per year. Annual precipitation totals 47.6 inches. Air quality is rated Good with a median AQI of 43.
Temperature
33°F Jan (1°C)
79°F Jul (26°C)
| Annual Average | 57.3°F |
| 6% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 305 days/yr |
Geography
| Elevation | 385 ft (117 m) |
| Area | 6.8 sq mi (17.5 km²) |
| Population Density | 1,302/sq mi |
| Coordinates | 37.7377°N, 88.5458°W |
| Timezone | America/Chicago |
| County | Saline County County |
| Nearest Airport | Barkley Regional (PAH) 48 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 70.1 / 100 |
| Social Vulnerability | 84.7 / 100 |
| Community Resilience | 61.5 / 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 Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 3.0 in | Coldest, Driest |
| February | 36°F (2°C) | 3.1 in | |
| March | 46°F (8°C) | 4.7 in | |
| April | 56°F (14°C) | 4.6 in | |
| May | 66°F (19°C) | 4.8 in | Wettest |
| June | 74°F (24°C) | 4.3 in | |
| July | 79°F (26°C) | 3.9 in | Warmest |
| August | 76°F (25°C) | 3.3 in | |
| September | 70°F (21°C) | 3.1 in | |
| October | 58°F (14°C) | 3.0 in | |
| November | 47°F (8°C) | 4.2 in | |
| December | 37°F (3°C) | 3.9 in |
Harrisburg has a seasonal temperature swing of 45°F / from 33°F in January to 79°F in July. Total annual precipitation is 45.8 inches, with May being the wettest month (4.8") and January the driest (3.0").