Riley, IN
Full City Profile · Indiana · Vigo County County
3.1
/5.0
B
Good
479
Population
5,322/sq mi density
$72,813
Median Income
$22,674 per capita
$92,700
Home Value
$229,589 Zillow
$921
Median Rent
19.2% income on rent
54°F
Avg Temperature
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
C
Economy
2.1 / 5.0
$72,813 median income, 21.4% unemployment
A+
Affordability
5.0 / 5.0
$92,700 home value, $921/mo rent
C
Education
2.2 / 5.0
15.5% bachelor's degree or higher
Riley experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 29°F in January while summers reach 76°F in July. Annual precipitation totals 41.8 inches. The area receives 15.1 inches of snow annually. Air quality is rated Good with a median AQI of 47.
Temperature
29°F Jan (-2°C)
76°F Jul (24°C)
| Annual Average | 53.8°F |
| 0% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 567 ft (173 m) |
| Area | 0.1 sq mi (0.2 km²) |
| Population Density | 5,322/sq mi |
| Coordinates | 39.3898°N, 87.3002°W |
| Timezone | America/Indiana/Indianapolis |
| County | Vigo County County |
| Nearest Airport | Terre Haute Regional (HUF) 4 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 47.0 |
| Rating | Good |
| Good Days % | 55.7% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0455 ppm |
| SO₂ (Sulfur Dioxide) | 1.01 ppb |
| PM2.5 (Fine Particles) | 10.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 83.2 / 100 |
| Social Vulnerability | 52.4 / 100 |
| Community Resilience | 90.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 2.6 in | Coldest |
| February | 33°F (0°C) | 2.0 in | Driest |
| March | 43°F (6°C) | 3.0 in | |
| April | 54°F (12°C) | 4.7 in | Wettest |
| May | 65°F (18°C) | 4.7 in | |
| June | 73°F (23°C) | 4.7 in | |
| July | 76°F (24°C) | 4.4 in | Warmest |
| August | 74°F (23°C) | 3.0 in | |
| September | 67°F (20°C) | 3.2 in | |
| October | 56°F (13°C) | 3.5 in | |
| November | 43°F (6°C) | 3.4 in | |
| December | 34°F (1°C) | 2.6 in |
Riley has a seasonal temperature swing of 47°F / from 29°F in January to 76°F in July. Total annual precipitation is 41.8 inches, with April being the wettest month (4.7") and February the driest (2.0").