Oswego, IN
Full City Profile · Indiana · Kosciusko County County
4.6
/5.0
A+
Excellent
284
Population
604/sq mi density
$244,000
Home Value
$334,187 Zillow
50°F
Avg Temperature
A+
Overall
4.6 / 5.0
Strong
A+
Education
4.6 / 5.0
45.0% bachelor's degree or higher
Oswego experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 24°F in January while summers reach 73°F in July. Annual precipitation totals 39.8 inches. The area receives 47.3 inches of snow annually.
Temperature
24°F Jan (-4°C)
73°F Jul (23°C)
| Annual Average | 50.1°F |
| 7% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 842 ft (257 m) |
| Area | 0.5 sq mi (1.2 km²) |
| Population Density | 604/sq mi |
| Coordinates | 41.3224°N, 85.7871°W |
| Timezone | America/Indiana/Indianapolis |
| County | Kosciusko County County |
| Nearest Airport | South Bend International (SBN) 38 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 66.3 / 100 |
| Social Vulnerability | 44.2 / 100 |
| Community Resilience | 79.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| 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 | 100 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 2.3 in | Coldest, Driest |
| February | 28°F (-2°C) | 2.3 in | |
| March | 38°F (3°C) | 2.8 in | |
| April | 50°F (10°C) | 4.1 in | |
| May | 60°F (16°C) | 4.1 in | |
| June | 69°F (21°C) | 4.2 in | |
| July | 73°F (23°C) | 3.8 in | Warmest |
| August | 71°F (22°C) | 4.2 in | Wettest |
| September | 64°F (18°C) | 3.3 in | |
| October | 53°F (12°C) | 3.1 in | |
| November | 41°F (5°C) | 3.1 in | |
| December | 30°F (-1°C) | 2.6 in |
Oswego has a seasonal temperature swing of 48°F / from 24°F in January to 73°F in July. Total annual precipitation is 39.8 inches, with August being the wettest month (4.2") and January the driest (2.3").