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Diamondhead Lake, IA
Full City Profile · Iowa · Dallas County County
4.0
/5.0
A
Great
283
Population
292/sq mi density
$125,000
Median Income
$76,084 per capita
$257,700
Home Value
$229,873 Zillow
48°F
Avg Temperature
275 sunny days/yr
387
Violent Crime/100K
2,202 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
4.8 / 5.0
$125,000 median income, 3.3% unemployment
A+
Affordability
5.0 / 5.0
$257,700 home value, /mo rent
F
Safety
1.0 / 5.0
387 violent crimes/100K (2% above avg)
A+
Education
5.0 / 5.0
50.0% bachelor's degree or higher
Diamondhead Lake experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 20°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 37.1 inches. Air quality is rated Good with a median AQI of 43.
Temperature
20°F Jan (-7°C)
74°F Jul (23°C)
| Annual Average | 48.4°F |
| 10% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 996 ft (304 m) |
| Area | 0.8 sq mi (2.0 km²) |
| Population Density | 292/sq mi |
| Coordinates | 41.5546°N, 94.2600°W |
| Timezone | America/Chicago |
| County | Dallas County County |
| Nearest Airport | Des Moines International (DSM) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 60.6 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 98.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 0.9 in | Coldest, Driest |
| February | 26°F (-4°C) | 1.0 in | |
| March | 37°F (3°C) | 2.2 in | |
| April | 50°F (10°C) | 3.2 in | |
| May | 61°F (16°C) | 4.2 in | |
| June | 70°F (21°C) | 4.7 in | Wettest |
| July | 74°F (23°C) | 3.9 in | Warmest |
| August | 72°F (22°C) | 4.0 in | |
| September | 64°F (18°C) | 3.8 in | |
| October | 52°F (11°C) | 2.6 in | |
| November | 37°F (3°C) | 1.8 in | |
| December | 24°F (-4°C) | 1.2 in |
Diamondhead Lake has a seasonal temperature swing of 55°F / from 20°F in January to 74°F in July. Total annual precipitation is 33.5 inches, with June being the wettest month (4.7") and January the driest (0.9").