Plain City, OH
Full City Profile · Ohio · Union County County
4.3
/5.0
A
Great
3,712
Population
1,209/sq mi density
$87,018
Median Income
$43,528 per capita
$325,400
Home Value
$539,414 Zillow
$1,044
Median Rent
22.6% income on rent
52°F
Avg Temperature
A
Overall
4.3 / 5.0
Strong
A+
Economy
4.5 / 5.0
$87,018 median income, 3.4% unemployment
A+
Affordability
4.6 / 5.0
$325,400 home value, $1,044/mo rent
B+
Education
3.7 / 5.0
34.3% bachelor's degree or higher
Plain City experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 29°F in January while summers reach 74°F in July. Annual precipitation totals 35.8 inches. The area receives 24.0 inches of snow annually.
Temperature
29°F Jan (-2°C)
74°F Jul (23°C)
| Annual Average | 52.4°F |
| 3% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 937 ft (286 m) |
| Area | 2.4 sq mi (6.2 km²) |
| Population Density | 1,209/sq mi |
| Coordinates | 40.1075°N, 83.2736°W |
| Timezone | America/New_York |
| County | Union County County |
| Nearest Airport | John Glenn Columbus International (CMH) 22 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 32.7 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 97.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 2.2 in | Coldest |
| February | 32°F (-0°C) | 1.9 in | Driest |
| March | 41°F (5°C) | 3.0 in | |
| April | 52°F (11°C) | 3.5 in | |
| May | 62°F (17°C) | 3.9 in | |
| June | 71°F (22°C) | 4.1 in | Wettest |
| July | 74°F (23°C) | 3.7 in | Warmest |
| August | 73°F (23°C) | 3.1 in | |
| September | 66°F (19°C) | 3.0 in | |
| October | 54°F (12°C) | 2.5 in | |
| November | 43°F (6°C) | 2.4 in | |
| December | 33°F (1°C) | 2.5 in |
Plain City has a seasonal temperature swing of 45°F / from 29°F in January to 74°F in July. Total annual precipitation is 35.8 inches, with June being the wettest month (4.1") and February the driest (1.9").