All Countries
Alton, IN
Full City Profile · Indiana · Perry County County
2.3
/5.0
C
Fair
35
Population
206/sq mi density
$65,114
Median Income
$40,294 per capita
$215,900
Home Value
$119,303 Zillow
56°F
Avg Temperature
290 sunny days/yr
14
Violent Crime/100K
1,918 property/100K
C
Overall
2.3 / 5.0
Fair overall score based on economy, affordability, safety and education
D
Economy
1.9 / 5.0
$65,114 median income, 17.1% unemployment
A+
Affordability
4.8 / 5.0
$215,900 home value, /mo rent
F
Safety
1.2 / 5.0
14 violent crimes/100K
F
Education
1.5 / 5.0
5.7% bachelor's degree or higher
Alton enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 33°F in January while summers reach 77°F in July. The area gets 290 sunny days per year. Annual precipitation totals 51.0 inches. Air quality is rated Good with a median AQI of 41.
Temperature
33°F Jan (1°C)
77°F Jul (25°C)
| Annual Average | 56.3°F |
| 4% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 407 ft (124 m) |
| Area | 0.2 sq mi (0.5 km²) |
| Population Density | 206/sq mi |
| Coordinates | 38.1201°N, 86.4186°W |
| Timezone | America/Indiana/Indianapolis |
| County | Perry County County |
| Nearest Airport | Louisville Muhammad Ali International (SDF) 37 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0463 ppm |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 35.0 / 100 |
| Social Vulnerability | 35.6 / 100 |
| Community Resilience | 67.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 3.3 in | Coldest |
| February | 36°F (2°C) | 3.3 in | |
| March | 45°F (7°C) | 4.5 in | |
| April | 55°F (13°C) | 4.4 in | |
| May | 64°F (18°C) | 4.6 in | Wettest |
| June | 72°F (22°C) | 3.9 in | |
| July | 77°F (25°C) | 4.6 in | Warmest |
| August | 75°F (24°C) | 3.8 in | |
| September | 68°F (20°C) | 3.3 in | |
| October | 57°F (14°C) | 2.9 in | Driest |
| November | 46°F (8°C) | 3.9 in | |
| December | 37°F (3°C) | 3.8 in |
Alton has a seasonal temperature swing of 44°F / from 33°F in January to 77°F in July. Total annual precipitation is 46.2 inches, with May being the wettest month (4.6") and October the driest (2.9").