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Weather & Climate in Addyston, OH
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Addyston experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 32°F in January while summers reach 76°F in July. The area gets 293 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 47.5 inches (wetter than the 38-inch national average). The area receives 11.4 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 487 feet.
Temperature
32°F Jan (0°C)
76°F Jul (25°C)
| Annual Average | 55.0°F |
| 2% above US avg | |
| January Average | 32°F (0°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 487 ft (148 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 1,015/sq mi |
| Coordinates | 39.1381°N, 84.7128°W |
| Timezone | America/New_York |
| County | Hamilton County County |
| Nearest Airport | Cincinnati/Northern Kentucky International (CVG) 7 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.3 / 100 |
| Social Vulnerability | 43.9 / 100 |
| Community Resilience | 86.3 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Very High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
12 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 | 97 km | 2 km |
| Feb 19, 1995 | 8 km SSE of Rocky Fork Point, Ohio | M3.6 | 107 km | 10 km |
| Sep 8, 1990 | 5 km N of Owingsville, Kentucky | M3.3 | 133 km | 0 km |
| Apr 17, 1990 | 8 km NW of Fort Recovery, Ohio | M3.0 | 148 km | 5 km |
| Apr 4, 1994 | 2 km WNW of Minster, Ohio | M2.9 | 143 km | 5 km |
| Aug 20, 2015 | 6 km SE of Lawrenceburg, Kentucky | M2.8 | 127 km | 34 km |
| Mar 17, 1999 | 2 km NNE of Ripley, Ohio | M2.8 | 87 km | 0 km |
| Mar 21, 1990 | 1 km W of Spring Mill, Kentucky | M2.7 | 138 km | 4 km |
| May 11, 2015 | 5 km ESE of Maysville, Kentucky | M2.6 | 106 km | 11 km |
| Jul 23, 2013 | 6 km NNE of Germantown, Kentucky | M2.6 | 82 km | 4 km |
| Jan 28, 2024 | 3 km SW of Old Washington, Kentucky | M2.5 | 97 km | 15 km |
| Jan 4, 1999 | 9 km WNW of Mount Sterling, Kentucky | M2.5 | 131 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
489 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 81 fatalities, 2,986 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 3, 1974 | EF5 | 24 km | 20.8 mi | 3 |
| Apr 3, 1974 | EF5 | 79 km | 31.3 mi | 36 |
| May 27, 2019 | EF4 | 79 km | 18.2 mi | 0 |
| Mar 2, 2012 | EF4 | 39 km | 9.9 mi | 4 |
| Sep 20, 2000 | EF4 | 85 km | 9.0 mi | 1 |
| Apr 9, 1999 | EF4 | 31 km | 10.0 mi | 4 |
| Nov 22, 1992 | EF4 | 67 km | 26.7 mi | 1 |
| Jun 2, 1990 | EF4 | 20 km | 33.0 mi | 0 |
| Jul 9, 1980 | EF4 | 85 km | 11.0 mi | 2 |
| Apr 3, 1974 | EF4 | 63 km | 27.1 mi | 0 |
| Apr 3, 1974 | EF4 | 87 km | 35.6 mi | 4 |
| Apr 3, 1974 | EF4 | 21 km | 19.8 mi | 2 |
| Apr 23, 1968 | EF4 | 38 km | 24.1 mi | 1 |
| Apr 23, 1968 | EF4 | 60 km | 78.7 mi | 6 |
| May 27, 2019 | EF3 | 87 km | 9.9 mi | 0 |
| May 27, 2019 | EF3 | 96 km | 10.5 mi | 0 |
| May 14, 2014 | EF3 | 96 km | 8.9 mi | 0 |
| Mar 2, 2012 | EF3 | 60 km | 8.7 mi | 3 |
| Mar 2, 2012 | EF3 | 46 km | 20.4 mi | 3 |
| Feb 28, 2011 | EF3 | 96 km | 2.3 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: JPG 09 1 (6,113 acres, 1998).
| Year | Name | Acres Burned | Distance |
| 1998 | JPG 09 1 | 6,113 | 68 km |
| 2005 | RX BURNPLAN AREA 2-06 | 5,054 | 67 km |
| 2007 | UNITS 8-9 2008 | 4,316 | 69 km |
| 2006 | UNIT 19 06 WUI | 3,412 | 69 km |
| 2003 | WUI 3 03 | 3,372 | 65 km |
| 2010 | WUI UNIT 28K | 3,230 | 63 km |
| 1999 | UNNAMED | 3,122 | 66 km |
| 2002 | UNIT 8 | 2,753 | 70 km |
| 2005 | UNIT 3 05 | 2,511 | 66 km |
| 2001 | 01 UNIT 16 | 2,361 | 66 km |
| 2011 | WUI UNITS 0 AND 1 2011 | 2,215 | 70 km |
| 2004 | UNIT 19 | 2,004 | 70 km |
| 2003 | UNIT 8 03 | 1,971 | 69 km |
| 2008 | FY 09 UNIT 42 RX FALL 2008 | 1,942 | 68 km |
| 2000 | JPG 14 | 1,908 | 68 km |
| 2003 | UNIT 16 03 | 1,809 | 66 km |
| 2002 | UNIT 9 | 1,485 | 68 km |
| 1995 | UNNAMED | 1,462 | 68 km |
| 2010 | TRACER | 1,408 | 64 km |
| 2007 | UNNAMED | 1,334 | 66 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 2.8 in | Coldest |
| February | 33°F (0°C) | 2.7 in | Driest |
| March | 43°F (6°C) | 3.9 in | |
| April | 53°F (11°C) | 4.1 in | |
| May | 63°F (17°C) | 4.7 in | Wettest |
| June | 71°F (22°C) | 4.1 in | |
| July | 76°F (25°C) | 3.9 in | Warmest |
| August | 74°F (23°C) | 3.8 in | |
| September | 67°F (19°C) | 2.9 in | |
| October | 55°F (13°C) | 3.0 in | |
| November | 44°F (7°C) | 3.4 in | |
| December | 35°F (1°C) | 3.3 in |
Addyston has a seasonal temperature swing of 44°F / from 32°F in January to 76°F in July. Total annual precipitation is 42.4 inches, with May being the wettest month (4.7") and February the driest (2.7").