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Weather & Climate in New Haven CDP (Hamilton County), OH
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
New Haven CDP (Hamilton County) experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 30°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 45.0 inches. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 579 feet.
Temperature
30°F Jan (-1°C)
76°F Jul (24°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 579 ft (176 m) |
| Area | 1.0 sq mi (2.7 km²) |
| Population Density | 212/sq mi |
| Coordinates | 39.2800°N, 84.7467°W |
| Timezone | America/New_York |
| County | Hamilton County County |
| Nearest Airport | Butler County Regional/Hogan Field (HAO) 13 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 | 86 km | 2 km |
| Feb 19, 1995 | 8 km SSE of Rocky Fork Point, Ohio | M3.6 | 111 km | 10 km |
| Sep 8, 1990 | 5 km N of Owingsville, Kentucky | M3.3 | 148 km | 0 km |
| Apr 17, 1990 | 8 km NW of Fort Recovery, Ohio | M3.0 | 132 km | 5 km |
| Apr 4, 1994 | 2 km WNW of Minster, Ohio | M2.9 | 128 km | 5 km |
| Aug 20, 2015 | 6 km SE of Lawrenceburg, Kentucky | M2.8 | 143 km | 34 km |
| Mar 17, 1999 | 2 km NNE of Ripley, Ohio | M2.8 | 98 km | 0 km |
| Mar 21, 1990 | 1 km W of Spring Mill, Kentucky | M2.7 | 149 km | 4 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 | 94 km | 4 km |
| Jan 28, 2024 | 3 km SW of Old Washington, Kentucky | M2.5 | 110 km | 15 km |
| Jan 4, 1999 | 9 km WNW of Mount Sterling, Kentucky | M2.5 | 147 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
531 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 82 fatalities, 2,973 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 3, 1974 | EF5 | 36 km | 20.8 mi | 3 |
| Apr 3, 1974 | EF5 | 71 km | 31.3 mi | 36 |
| May 27, 2019 | EF4 | 65 km | 18.2 mi | 0 |
| Mar 2, 2012 | EF4 | 55 km | 9.9 mi | 4 |
| Sep 20, 2000 | EF4 | 78 km | 9.0 mi | 1 |
| Apr 9, 1999 | EF4 | 33 km | 10.0 mi | 4 |
| Nov 22, 1992 | EF4 | 81 km | 26.7 mi | 1 |
| Jun 2, 1990 | EF4 | 16 km | 33.0 mi | 0 |
| Jul 9, 1980 | EF4 | 73 km | 11.0 mi | 2 |
| Apr 3, 1974 | EF4 | 94 km | 18.9 mi | 0 |
| Apr 3, 1974 | EF4 | 26 km | 19.8 mi | 2 |
| Apr 3, 1974 | EF4 | 73 km | 27.1 mi | 0 |
| Apr 3, 1974 | EF4 | 86 km | 35.6 mi | 4 |
| Apr 3, 1974 | EF4 | 97 km | 18.0 mi | 1 |
| Apr 23, 1968 | EF4 | 75 km | 78.7 mi | 6 |
| Apr 23, 1968 | EF4 | 46 km | 24.1 mi | 1 |
| Apr 25, 1961 | EF4 | 96 km | 63.1 mi | 0 |
| May 27, 2019 | EF3 | 81 km | 10.5 mi | 0 |
| May 27, 2019 | EF3 | 77 km | 9.9 mi | 0 |
| May 14, 2014 | EF3 | 89 km | 8.9 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 | 73 km |
| 2005 | RX BURNPLAN AREA 2-06 | 5,054 | 73 km |
| 2007 | UNITS 8-9 2008 | 4,316 | 75 km |
| 2006 | UNIT 19 06 WUI | 3,412 | 75 km |
| 2003 | WUI 3 03 | 3,372 | 69 km |
| 2010 | WUI UNIT 28K | 3,230 | 66 km |
| 1999 | UNNAMED | 3,122 | 70 km |
| 2002 | UNIT 8 | 2,753 | 76 km |
| 2005 | UNIT 3 05 | 2,511 | 69 km |
| 2001 | 01 UNIT 16 | 2,361 | 72 km |
| 2011 | WUI UNITS 0 AND 1 2011 | 2,215 | 76 km |
| 2004 | UNIT 19 | 2,004 | 76 km |
| 2003 | UNIT 8 03 | 1,971 | 74 km |
| 2008 | FY 09 UNIT 42 RX FALL 2008 | 1,942 | 72 km |
| 2000 | JPG 14 | 1,908 | 74 km |
| 2003 | UNIT 16 03 | 1,809 | 73 km |
| 2002 | UNIT 9 | 1,485 | 74 km |
| 1995 | UNNAMED | 1,462 | 72 km |
| 2010 | TRACER | 1,408 | 67 km |
| 2007 | UNNAMED | 1,334 | 71 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.7 in | Coldest |
| February | 32°F (0°C) | 2.6 in | Driest |
| March | 42°F (6°C) | 3.8 in | |
| April | 52°F (11°C) | 4.0 in | |
| May | 62°F (17°C) | 4.6 in | Wettest |
| June | 71°F (22°C) | 3.9 in | |
| July | 76°F (24°C) | 3.9 in | Warmest |
| August | 73°F (23°C) | 3.7 in | |
| September | 67°F (19°C) | 2.8 in | |
| October | 55°F (13°C) | 3.0 in | |
| November | 44°F (7°C) | 3.5 in | |
| December | 34°F (1°C) | 3.2 in |
New Haven CDP (Hamilton County) has a seasonal temperature swing of 46°F / from 30°F in January to 76°F in July. Total annual precipitation is 41.7 inches, with May being the wettest month (4.6") and February the driest (2.6").