Onton, KY
Full City Profile · Kentucky · McLean County County
5.0
/5.0
A+
Excellent
113
Population
136/sq mi density
57°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Onton enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 34°F in January while summers reach 78°F in July. Annual precipitation totals 47.6 inches. The area receives 9.8 inches of snow annually.
Temperature
34°F Jan (1°C)
78°F Jul (25°C)
| Annual Average | 57.2°F |
| 6% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 78°F (25°C) |
Geography
| Elevation | 393 ft (120 m) |
| Area | 0.8 sq mi (2.1 km²) |
| Population Density | 136/sq mi |
| Coordinates | 37.5614°N, 87.4393°W |
| Timezone | America/New_York |
| County | McLean County County |
| Nearest Airport | Owensboro/Daviess County Regional (OWB) 19 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 40.7 / 100 |
| Social Vulnerability | 78.4 / 100 |
| Community Resilience | 51.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 3.4 in | Coldest |
| February | 38°F (3°C) | 3.3 in | |
| March | 47°F (8°C) | 4.4 in | |
| April | 58°F (14°C) | 4.8 in | |
| May | 67°F (19°C) | 5.4 in | Wettest |
| June | 75°F (24°C) | 3.9 in | |
| July | 78°F (25°C) | 3.9 in | Warmest |
| August | 77°F (25°C) | 3.3 in | Driest |
| September | 70°F (21°C) | 3.6 in | |
| October | 59°F (15°C) | 3.6 in | |
| November | 46°F (8°C) | 3.5 in | |
| December | 38°F (3°C) | 4.5 in |
Onton has a seasonal temperature swing of 43°F / from 34°F in January to 78°F in July. Total annual precipitation is 47.6 inches, with May being the wettest month (5.4") and August the driest (3.3").