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De Graff, OH
Full City Profile · Ohio · Logan County County
3.4
/5.0
B
Good
1,442
Population
1,442/sq mi density
$83,693
Median Income
$39,395 per capita
$169,000
Home Value
$241,790 Zillow
$838
Median Rent
16.7% income on rent
51°F
Avg Temperature
275 sunny days/yr
73
Violent Crime/100K
2,348 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$83,693 median income, 3.5% unemployment
A+
Affordability
5.0 / 5.0
$169,000 home value, $838/mo rent
F
Safety
1.0 / 5.0
73 violent crimes/100K
B
Education
3.2 / 5.0
28.1% bachelor's degree or higher
De Graff experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 26°F in January while summers reach 73°F in July. The area gets 275 sunny days per year. Annual precipitation totals 42.6 inches. Air quality is rated Good with a median AQI of 43.
Temperature
26°F Jan (-4°C)
73°F Jul (23°C)
| Annual Average | 50.6°F |
| 6% below US avg | |
| January Average | 26°F (-4°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 1,007 ft (307 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 1,442/sq mi |
| Coordinates | 40.3127°N, 83.9166°W |
| Timezone | America/New_York |
| County | Logan County County |
| Nearest Airport | James M Cox Dayton International (DAY) 33 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 53.2 / 100 |
| Social Vulnerability | 30.9 / 100 |
| Community Resilience | 87.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-4°C) | 2.1 in | Coldest |
| February | 28°F (-2°C) | 2.0 in | Driest |
| March | 39°F (4°C) | 3.1 in | |
| April | 49°F (10°C) | 3.6 in | |
| May | 60°F (16°C) | 4.1 in | |
| June | 69°F (20°C) | 3.9 in | |
| July | 73°F (23°C) | 4.1 in | Warmest, Wettest |
| August | 71°F (21°C) | 3.4 in | |
| September | 64°F (18°C) | 2.8 in | |
| October | 53°F (12°C) | 2.6 in | |
| November | 42°F (5°C) | 3.1 in | |
| December | 31°F (-1°C) | 2.8 in |
De Graff has a seasonal temperature swing of 47°F / from 26°F in January to 73°F in July. Total annual precipitation is 37.4 inches, with July being the wettest month (4.1") and February the driest (2.0").