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Lamoni, IA
Full City Profile · Iowa · Decatur County County
3.5
/5.0
B+
Good
2,121
Population
537/sq mi density
$52,300
Median Income
$24,450 per capita
$107,900
Home Value
$154,145 Zillow
$676
Median Rent
27.0% income on rent
52°F
Avg Temperature
275 sunny days/yr
159
Violent Crime/100K
1,746 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$52,300 median income, 3.9% unemployment
A+
Affordability
5.0 / 5.0
$107,900 home value, $676/mo rent
F
Safety
1.0 / 5.0
159 violent crimes/100K
A+
Education
4.9 / 5.0
48.7% bachelor's degree or higher
Lamoni experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 24°F in January while summers reach 77°F in July. The area gets 275 sunny days per year. Annual precipitation totals 41.0 inches. The area receives 26.7 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
24°F Jan (-5°C)
77°F Jul (25°C)
| Annual Average | 51.5°F |
| 5% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,092 ft (333 m) |
| Area | 4.0 sq mi (10.2 km²) |
| Population Density | 537/sq mi |
| Coordinates | 40.6196°N, 93.9305°W |
| Timezone | America/Chicago |
| County | Decatur County County |
| Nearest Airport | Des Moines International (DSM) 62 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 23.6 / 100 |
| Social Vulnerability | 43.0 / 100 |
| Community Resilience | 41.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 0.9 in | Coldest, Driest |
| February | 28°F (-2°C) | 1.0 in | |
| March | 40°F (4°C) | 2.4 in | |
| April | 51°F (11°C) | 3.5 in | |
| May | 62°F (16°C) | 4.5 in | Wettest |
| June | 71°F (22°C) | 4.1 in | |
| July | 77°F (25°C) | 4.4 in | Warmest |
| August | 74°F (23°C) | 4.3 in | |
| September | 65°F (19°C) | 4.3 in | |
| October | 54°F (12°C) | 3.1 in | |
| November | 39°F (4°C) | 2.2 in | |
| December | 27°F (-3°C) | 1.4 in |
Lamoni has a seasonal temperature swing of 53°F / from 24°F in January to 77°F in July. Total annual precipitation is 36.2 inches, with May being the wettest month (4.5") and January the driest (0.9").