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Arenzville, IL
Full City Profile · Illinois · Cass County County
3.5
/5.0
B+
Good
310
Population
403/sq mi density
$82,188
Median Income
$43,609 per capita
$109,900
Home Value
$160,879 Zillow
$825
Median Rent
20.4% income on rent
53°F
Avg Temperature
302 sunny days/yr
879
Violent Crime/100K
693 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$82,188 median income, 0.4% unemployment
A+
Affordability
5.0 / 5.0
$109,900 home value, $825/mo rent
F
Safety
1.0 / 5.0
879 violent crimes/100K (131% above avg)
B+
Education
3.6 / 5.0
32.4% bachelor's degree or higher
Arenzville experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 27°F in January while summers reach 75°F in July. The area gets 302 sunny days per year. Annual precipitation totals 39.3 inches. The area receives 16.2 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
27°F Jan (-3°C)
75°F Jul (24°C)
| Annual Average | 52.7°F |
| 2% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 539 ft (164 m) |
| Area | 0.3 sq mi (0.8 km²) |
| Population Density | 403/sq mi |
| Coordinates | 39.8805°N, 90.3706°W |
| Timezone | America/Chicago |
| County | Cass County County |
| Nearest Airport | Quincy Regional-Baldwin Field (UIN) 44 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 38.7 / 100 |
| Social Vulnerability | 38.7 / 100 |
| Community Resilience | 76.7 / 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 Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 1.5 in | Coldest, Driest |
| February | 30°F (-1°C) | 1.6 in | |
| March | 42°F (5°C) | 3.1 in | |
| April | 54°F (12°C) | 3.8 in | |
| May | 64°F (18°C) | 4.5 in | Wettest |
| June | 73°F (23°C) | 3.8 in | |
| July | 75°F (24°C) | 3.8 in | Warmest |
| August | 74°F (24°C) | 3.4 in | |
| September | 67°F (19°C) | 3.5 in | |
| October | 55°F (13°C) | 2.8 in | |
| November | 42°F (6°C) | 3.2 in | |
| December | 30°F (-1°C) | 2.5 in |
Arenzville has a seasonal temperature swing of 48°F / from 27°F in January to 75°F in July. Total annual precipitation is 37.5 inches, with May being the wettest month (4.5") and January the driest (1.5").