Grissom AFB, IN
Full City Profile · Indiana · Miami County County
3.3
/5.0
B
Good
2,882
Population
721/sq mi density
$52,829
Median Income
$24,193 per capita
$84,700
Home Value
$185,601 Zillow
$864
Median Rent
22.3% income on rent
50°F
Avg Temperature
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.4 / 5.0
$52,829 median income, 3.8% unemployment
A+
Affordability
5.0 / 5.0
$84,700 home value, $864/mo rent
F
Education
1.4 / 5.0
4.9% bachelor's degree or higher
Grissom AFB experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 24°F in January while summers reach 72°F in July. Annual precipitation totals 41.1 inches. The area receives 20.9 inches of snow annually.
Temperature
24°F Jan (-4°C)
72°F Jul (22°C)
| Annual Average | 50.1°F |
| 7% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 793 ft (242 m) |
| Area | 4.0 sq mi (10.4 km²) |
| Population Density | 721/sq mi |
| Coordinates | 40.6571°N, 86.1454°W |
| Timezone | America/Indiana/Indianapolis |
| County | Miami County County |
| Nearest Airport | Delaware County Regional (MIE) 49 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 52.8 / 100 |
| Social Vulnerability | 53.4 / 100 |
| Community Resilience | 54.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 131 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 2.6 in | Coldest |
| February | 28°F (-2°C) | 2.3 in | Driest |
| March | 38°F (3°C) | 2.9 in | |
| April | 49°F (10°C) | 3.9 in | |
| May | 61°F (16°C) | 4.4 in | |
| June | 70°F (21°C) | 5.0 in | Wettest |
| July | 72°F (22°C) | 4.2 in | Warmest |
| August | 71°F (21°C) | 4.2 in | |
| September | 64°F (18°C) | 3.3 in | |
| October | 53°F (12°C) | 2.8 in | |
| November | 40°F (5°C) | 3.3 in | |
| December | 30°F (-1°C) | 2.3 in |
Grissom AFB has a seasonal temperature swing of 48°F / from 24°F in January to 72°F in July. Total annual precipitation is 41.1 inches, with June being the wettest month (5.0") and February the driest (2.3").