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Marble Rock, IA
Full City Profile · Iowa · Butler County County
2.8
/5.0
C+
Fair
199
Population
240/sq mi density
$65,938
Median Income
$39,427 per capita
$59,300
Home Value
$156,034 Zillow
$592
Median Rent
23.0% income on rent
47°F
Avg Temperature
260 sunny days/yr
254
Violent Crime/100K
1,521 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$65,938 median income, 3.4% unemployment
A+
Affordability
5.0 / 5.0
$59,300 home value, $592/mo rent
F
Safety
1.0 / 5.0
254 violent crimes/100K
F
Education
1.3 / 5.0
3.3% bachelor's degree or higher
Marble Rock experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 16°F in January while summers reach 73°F in July. The area gets 260 sunny days per year. Annual precipitation totals 35.4 inches. Air quality is rated Good with a median AQI of 43.
Temperature
16°F Jan (-9°C)
73°F Jul (23°C)
| Annual Average | 46.7°F |
| 14% below US avg | |
| January Average | 16°F (-9°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 1,004 ft (306 m) |
| Area | 0.9 sq mi (2.3 km²) |
| Population Density | 240/sq mi |
| Coordinates | 42.9646°N, 92.8678°W |
| Timezone | America/Chicago |
| County | Butler County County |
| Nearest Airport | Northeast Iowa Regional (CCY) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 27.1 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 89.4 / 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 | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 16°F (-9°C) | 0.8 in | Coldest, Driest |
| February | 21°F (-6°C) | 0.8 in | |
| March | 34°F (1°C) | 1.9 in | |
| April | 47°F (9°C) | 3.1 in | |
| May | 60°F (16°C) | 3.9 in | |
| June | 69°F (21°C) | 4.7 in | |
| July | 73°F (23°C) | 4.7 in | Warmest, Wettest |
| August | 70°F (21°C) | 4.1 in | |
| September | 62°F (17°C) | 3.9 in | |
| October | 50°F (10°C) | 2.5 in | |
| November | 34°F (1°C) | 1.7 in | |
| December | 20°F (-7°C) | 1.1 in |
Marble Rock has a seasonal temperature swing of 57°F / from 16°F in January to 73°F in July. Total annual precipitation is 33.2 inches, with July being the wettest month (4.7") and January the driest (0.8").