Sullivan, OH
Full City Profile · Ohio · Huron County County
3.7
/5.0
B+
Good
841
Population
203/sq mi density
$95,369
Median Income
$31,521 per capita
$240,200
Home Value
$295,833 Zillow
49°F
Avg Temperature
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$95,369 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$240,200 home value, /mo rent
F
Education
1.2 / 5.0
2.4% bachelor's degree or higher
Sullivan experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 25°F in January while summers reach 71°F in July. Annual precipitation totals 40.5 inches. The area receives 35.7 inches of snow annually.
Temperature
25°F Jan (-4°C)
71°F Jul (22°C)
| Annual Average | 48.6°F |
| 10% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 71°F (22°C) |
Geography
| Elevation | 1,154 ft (352 m) |
| Area | 4.2 sq mi (10.8 km²) |
| Population Density | 203/sq mi |
| Coordinates | 41.0211°N, 82.2147°W |
| Timezone | America/New_York |
| County | Huron County County |
| Nearest Airport | Mansfield Lahm Regional (MFD) 21 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 50.3 / 100 |
| Social Vulnerability | 37.7 / 100 |
| Community Resilience | 77.6 / 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 | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.8 in | Coldest |
| February | 26°F (-3°C) | 2.2 in | Driest |
| March | 35°F (2°C) | 3.0 in | |
| April | 48°F (9°C) | 3.9 in | |
| May | 58°F (14°C) | 4.1 in | Wettest |
| June | 67°F (20°C) | 4.1 in | |
| July | 71°F (22°C) | 4.1 in | Warmest |
| August | 70°F (21°C) | 3.4 in | |
| September | 63°F (17°C) | 3.5 in | |
| October | 51°F (11°C) | 3.4 in | |
| November | 40°F (4°C) | 3.0 in | |
| December | 30°F (-1°C) | 2.9 in |
Sullivan has a seasonal temperature swing of 46°F / from 25°F in January to 71°F in July. Total annual precipitation is 40.5 inches, with May being the wettest month (4.1") and February the driest (2.2").