Irwin, IL
Full City Profile · Illinois · Kankakee County County
4.2
/5.0
A
Great
60
Population
1,200/sq mi density
$87,083
Median Income
$42,092 per capita
$144,600
Home Value
$198,049 Zillow
$1,125
Median Rent
17.5% income on rent
51°F
Avg Temperature
A
Overall
4.2 / 5.0
Strong
A+
Economy
4.7 / 5.0
$87,083 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$144,600 home value, $1,125/mo rent
B
Education
3.0 / 5.0
25.6% bachelor's degree or higher
Irwin experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 24°F in January while summers reach 75°F in July. Annual precipitation totals 41.7 inches. The area receives 20.7 inches of snow annually.
Temperature
24°F Jan (-4°C)
75°F Jul (24°C)
| Annual Average | 51.2°F |
| 5% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 657 ft (200 m) |
| Area | 0.0 sq mi (0.1 km²) |
| Population Density | 1,200/sq mi |
| Coordinates | 41.0531°N, 87.9839°W |
| Timezone | America/Chicago |
| County | Kankakee County County |
| Nearest Airport | Joliet Regional (JOT) 34 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 88.2 / 100 |
| Social Vulnerability | 50.0 / 100 |
| Community Resilience | 83.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively 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 | 117 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 2.4 in | Coldest |
| February | 28°F (-2°C) | 1.9 in | Driest |
| March | 39°F (4°C) | 2.5 in | |
| April | 50°F (10°C) | 3.9 in | |
| May | 62°F (17°C) | 5.2 in | |
| June | 72°F (22°C) | 5.2 in | Wettest |
| July | 75°F (24°C) | 4.7 in | Warmest |
| August | 73°F (23°C) | 3.9 in | |
| September | 67°F (19°C) | 3.6 in | |
| October | 54°F (12°C) | 3.4 in | |
| November | 41°F (5°C) | 2.8 in | |
| December | 30°F (-1°C) | 2.4 in |
Irwin has a seasonal temperature swing of 50°F / from 24°F in January to 75°F in July. Total annual precipitation is 41.7 inches, with June being the wettest month (5.2") and February the driest (1.9").