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Adams, IL
Full City Profile · Illinois · Adams County County
4.4
/5.0
A
Great
121
Population
54/sq mi density
$142,938
Median Income
$60,967 per capita
$317,500
Home Value
$154,060 Zillow
53°F
Avg Temperature
302 sunny days/yr
A
Overall
4.4 / 5.0
Strong
A+
Economy
5.0 / 5.0
$142,938 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$317,500 home value, /mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A+
Education
5.0 / 5.0
66.4% bachelor's degree or higher
Adams experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 27°F in January while summers reach 76°F in July. The area gets 302 sunny days per year. Annual precipitation totals 36.4 inches. Air quality is rated Good with a median AQI of 42.
Temperature
27°F Jan (-3°C)
76°F Jul (25°C)
| Annual Average | 53.0°F |
| 2% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 725 ft (221 m) |
| Area | 2.2 sq mi (5.8 km²) |
| Population Density | 54/sq mi |
| Coordinates | 39.8709°N, 91.1999°W |
| Timezone | America/Chicago |
| County | Adams County County |
| Nearest Airport | Quincy Regional-Baldwin Field (UIN) 5 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 90.1% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0484 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 64.2 / 100 |
| Social Vulnerability | 29.6 / 100 |
| Community Resilience | 92.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| 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 | 27°F (-3°C) | 1.4 in | Coldest, Driest |
| February | 30°F (-1°C) | 1.5 in | |
| March | 41°F (5°C) | 3.0 in | |
| April | 53°F (12°C) | 3.8 in | |
| May | 63°F (17°C) | 4.5 in | Wettest |
| June | 72°F (22°C) | 3.8 in | |
| July | 76°F (25°C) | 4.5 in | Warmest |
| August | 74°F (24°C) | 3.6 in | |
| September | 67°F (19°C) | 4.3 in | |
| October | 55°F (13°C) | 3.3 in | |
| November | 42°F (5°C) | 2.8 in | |
| December | 30°F (-1°C) | 2.4 in |
Adams has a seasonal temperature swing of 50°F / from 27°F in January to 76°F in July. Total annual precipitation is 38.9 inches, with May being the wettest month (4.5") and January the driest (1.4").