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Swan, IA
Full City Profile · Iowa · Marion County County
2.1
/5.0
C
Fair
58
Population
94/sq mi density
$44,861
Median Income
$29,702 per capita
50°F
Avg Temperature
275 sunny days/yr
296
Violent Crime/100K
1,719 property/100K
C
Overall
2.1 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$44,861 median income, 0.0% unemployment
F
Safety
1.0 / 5.0
296 violent crimes/100K
D
Education
1.6 / 5.0
7.1% bachelor's degree or higher
Swan experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 21°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 37.5 inches. Air quality is rated Good with a median AQI of 43.
Temperature
21°F Jan (-6°C)
75°F Jul (24°C)
| Annual Average | 49.9°F |
| 8% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 753 ft (230 m) |
| Area | 0.6 sq mi (1.7 km²) |
| Population Density | 94/sq mi |
| Coordinates | 41.4676°N, 93.3095°W |
| Timezone | America/Chicago |
| County | Marion County County |
| Nearest Airport | Des Moines International (DSM) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 34.4 / 100 |
| Social Vulnerability | 13.4 / 100 |
| Community Resilience | 96.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 1.9 in | Coldest, Driest |
| February | 27°F (-3°C) | 2.0 in | |
| March | 38°F (3°C) | 3.2 in | |
| April | 51°F (10°C) | 3.6 in | |
| May | 62°F (16°C) | 4.2 in | |
| June | 71°F (22°C) | 4.5 in | Wettest |
| July | 75°F (24°C) | 4.3 in | Warmest |
| August | 73°F (23°C) | 3.7 in | |
| September | 65°F (18°C) | 3.6 in | |
| October | 53°F (12°C) | 2.8 in | |
| November | 38°F (3°C) | 2.6 in | |
| December | 25°F (-4°C) | 2.2 in |
Swan has a seasonal temperature swing of 54°F / from 21°F in January to 75°F in July. Total annual precipitation is 38.4 inches, with June being the wettest month (4.5") and January the driest (1.9").