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Weather & Climate in Trenton, OH
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Trenton experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 30°F in January while summers reach 75°F in July. The area gets 297 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 661 feet.
Temperature
30°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 53.8°F |
| 0% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 297 days/yr |
Geography
| Elevation | 661 ft (201 m) |
| Area | 4.6 sq mi (11.8 km²) |
| Population Density | 2,693/sq mi |
| Coordinates | 39.4788°N, 84.4664°W |
| Timezone | America/New_York |
| County | Butler County County |
| Nearest Airport | Middletown Regional/Hook Field (MWO) 5 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.5 / 100 |
| Social Vulnerability | 22.4 / 100 |
| Community Resilience | 74.1 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
10 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Sep 12, 2004 | 4 km NW of Manilla, Indiana | M3.8 | 103 km | 2 km |
| Feb 19, 1995 | 8 km SSE of Rocky Fork Point, Ohio | M3.6 | 95 km | 10 km |
| Apr 17, 1990 | 8 km NW of Fort Recovery, Ohio | M3.0 | 114 km | 5 km |
| Apr 4, 1994 | 2 km WNW of Minster, Ohio | M2.9 | 103 km | 5 km |
| May 12, 2006 | 2 km E of Lima, Ohio | M2.8 | 144 km | 5 km |
| Mar 17, 1999 | 2 km NNE of Ripley, Ohio | M2.8 | 97 km | 0 km |
| May 11, 2015 | 5 km ESE of Maysville, Kentucky | M2.6 | 117 km | 11 km |
| Jul 23, 2013 | 6 km NNE of Germantown, Kentucky | M2.6 | 97 km | 4 km |
| Jan 28, 2024 | 3 km SW of Old Washington, Kentucky | M2.5 | 112 km | 15 km |
| Jan 30, 2004 | 2 km S of Rockford, Ohio | M2.5 | 133 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
505 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 79 fatalities, 2,901 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 3, 1974 | EF5 | 67 km | 20.8 mi | 3 |
| Apr 3, 1974 | EF5 | 40 km | 31.3 mi | 36 |
| May 27, 2019 | EF4 | 38 km | 18.2 mi | 0 |
| Mar 2, 2012 | EF4 | 78 km | 9.9 mi | 4 |
| Sep 20, 2000 | EF4 | 46 km | 9.0 mi | 1 |
| Apr 9, 1999 | EF4 | 29 km | 10.0 mi | 4 |
| Jun 2, 1990 | EF4 | 49 km | 33.0 mi | 0 |
| Jul 9, 1980 | EF4 | 88 km | 11.0 mi | 2 |
| Apr 3, 1974 | EF4 | 94 km | 18.0 mi | 1 |
| Apr 3, 1974 | EF4 | 33 km | 19.8 mi | 2 |
| Apr 23, 1968 | EF4 | 90 km | 78.7 mi | 6 |
| Apr 23, 1968 | EF4 | 45 km | 24.1 mi | 1 |
| Apr 11, 1965 | EF4 | 97 km | 18.4 mi | 3 |
| Mar 14, 2024 | EF3 | 96 km | 41.3 mi | 1 |
| May 27, 2019 | EF3 | 45 km | 9.9 mi | 0 |
| May 27, 2019 | EF3 | 55 km | 10.5 mi | 0 |
| May 14, 2014 | EF3 | 58 km | 8.9 mi | 0 |
| Mar 2, 2012 | EF3 | 72 km | 20.4 mi | 3 |
| Mar 2, 2012 | EF3 | 93 km | 8.7 mi | 3 |
| Jul 2, 1997 | EF3 | 74 km | 12.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
9 wildfires (100+ acres) recorded within 100 km. Largest: WUI UNIT 28K (3,230 acres, 2010).
| Year | Name | Acres Burned | Distance |
| 2010 | WUI UNIT 28K | 3,230 | 98 km |
| 2010 | TRACER | 1,408 | 99 km |
| 1995 | UNNAMED | 1,019 | 100 km |
| 2004 | UNIT 30 | 938 | 97 km |
| 2002 | UNIT 1 | 707 | 98 km |
| 2004 | UNIT 1 | 669 | 99 km |
| 2005 | UNIT 31 05 | 649 | 98 km |
| 2007 | UNIT 2 07 WUI | 571 | 100 km |
| 2004 | UNIT 2 | 514 | 100 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.6 in | Coldest |
| February | 32°F (-0°C) | 2.5 in | Driest |
| March | 42°F (6°C) | 3.7 in | |
| April | 52°F (11°C) | 3.9 in | |
| May | 62°F (17°C) | 4.5 in | Wettest |
| June | 71°F (22°C) | 3.5 in | |
| July | 75°F (24°C) | 4.1 in | Warmest |
| August | 74°F (23°C) | 3.5 in | |
| September | 67°F (19°C) | 3.1 in | |
| October | 55°F (13°C) | 3.0 in | |
| November | 44°F (6°C) | 3.5 in | |
| December | 33°F (1°C) | 3.1 in |
Trenton has a seasonal temperature swing of 45°F / from 30°F in January to 75°F in July. Total annual precipitation is 40.9 inches, with May being the wettest month (4.5") and February the driest (2.5").