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Mariemont, OH
Full City Profile · Ohio · Hamilton County County
4.3
/5.0
A
Great
3,477
Population
3,907/sq mi density
$153,507
Median Income
$84,248 per capita
$584,400
Home Value
$252,093 Zillow
$1,313
Median Rent
23.0% income on rent
55°F
Avg Temperature
293 sunny days/yr
A
Overall
4.3 / 5.0
Strong
A+
Economy
5.0 / 5.0
$153,507 median income, 1.4% unemployment
A+
Affordability
4.5 / 5.0
$584,400 home value, $1,313/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A+
Education
5.0 / 5.0
78.5% bachelor's degree or higher
Mariemont experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 32°F in January while summers reach 76°F in July. The area gets 293 sunny days per year. Annual precipitation totals 43.4 inches. Air quality is rated Good with a median AQI of 43.
Temperature
32°F Jan (0°C)
76°F Jul (24°C)
| Annual Average | 54.8°F |
| 1% above US avg | |
| January Average | 32°F (0°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 585 ft (178 m) |
| Area | 0.9 sq mi (2.3 km²) |
| Population Density | 3,907/sq mi |
| Coordinates | 39.1425°N, 84.3790°W |
| Timezone | America/New_York |
| County | Hamilton County County |
| Nearest Airport | Cincinnati/Northern Kentucky International (CVG) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0466 ppm |
| NO₂ (Nitrogen Dioxide) | 19.3 ppb |
| SO₂ (Sulfur Dioxide) | 0.71 ppb |
| CO (Carbon Monoxide) | 0.29 ppm |
| PM2.5 (Fine Particles) | 10.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.3 / 100 |
| Social Vulnerability | 43.9 / 100 |
| Community Resilience | 86.3 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Very High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 2.8 in | Coldest |
| February | 34°F (1°C) | 2.7 in | Driest |
| March | 43°F (6°C) | 4.1 in | |
| April | 53°F (12°C) | 4.0 in | |
| May | 63°F (17°C) | 4.6 in | Wettest |
| June | 72°F (22°C) | 3.8 in | |
| July | 76°F (24°C) | 4.1 in | Warmest |
| August | 74°F (24°C) | 3.8 in | |
| September | 68°F (20°C) | 3.2 in | |
| October | 56°F (13°C) | 3.0 in | |
| November | 45°F (7°C) | 3.5 in | |
| December | 35°F (2°C) | 3.2 in |
Mariemont has a seasonal temperature swing of 44°F / from 32°F in January to 76°F in July. Total annual precipitation is 42.7 inches, with May being the wettest month (4.6") and February the driest (2.7").