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Hamilton, IL
Full City Profile · Illinois · Hancock County County
3.1
/5.0
B
Good
2,738
Population
769/sq mi density
$53,487
Median Income
$36,009 per capita
$105,600
Home Value
$120,751 Zillow
$888
Median Rent
32.9% income on rent
52°F
Avg Temperature
275 sunny days/yr
129
Violent Crime/100K
129 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$53,487 median income, 0.9% unemployment
A+
Affordability
5.0 / 5.0
$105,600 home value, $888/mo rent
F
Safety
1.0 / 5.0
129 violent crimes/100K
C+
Education
2.8 / 5.0
22.7% bachelor's degree or higher
Hamilton experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 25°F in January while summers reach 76°F in July. The area gets 275 sunny days per year. Annual precipitation totals 39.8 inches. Air quality is rated Good with a median AQI of 44.
Temperature
25°F Jan (-4°C)
76°F Jul (25°C)
| Annual Average | 52.1°F |
| 4% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 497 ft (151 m) |
| Area | 3.6 sq mi (9.2 km²) |
| Population Density | 769/sq mi |
| Coordinates | 40.3915°N, 91.3613°W |
| Timezone | America/Chicago |
| County | Hancock County County |
| Nearest Airport | Southeast Iowa Regional (BRL) 30 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 64.5% |
| Unhealthy Days | 1 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 31.1 / 100 |
| Social Vulnerability | 64.8 / 100 |
| Community Resilience | 61.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| 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 | 25°F (-4°C) | 1.5 in | Coldest |
| February | 29°F (-1°C) | 1.2 in | Driest |
| March | 41°F (5°C) | 2.9 in | |
| April | 53°F (11°C) | 3.6 in | |
| May | 63°F (17°C) | 4.3 in | |
| June | 72°F (22°C) | 3.9 in | |
| July | 76°F (25°C) | 4.5 in | Warmest, Wettest |
| August | 74°F (24°C) | 3.5 in | |
| September | 67°F (19°C) | 4.5 in | |
| October | 55°F (13°C) | 3.1 in | |
| November | 41°F (5°C) | 2.6 in | |
| December | 29°F (-2°C) | 1.9 in |
Hamilton has a seasonal temperature swing of 51°F / from 25°F in January to 76°F in July. Total annual precipitation is 37.5 inches, with July being the wettest month (4.5") and February the driest (1.2").