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Weather & Climate in Dennison, OH
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dennison experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 28°F in January while summers reach 73°F in July. The area gets 275 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 42.4 inches. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 863 feet.
Temperature
28°F Jan (-2°C)
73°F Jul (23°C)
| Annual Average | 51.1°F |
| 5% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 863 ft (263 m) |
| Area | 1.4 sq mi (3.5 km²) |
| Population Density | 1,745/sq mi |
| Coordinates | 40.3977°N, 81.3273°W |
| Timezone | America/New_York |
| County | Tuscarawas County County |
| Nearest Airport | Akron-Canton Regional (CAK) 36 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 69.0 / 100 |
| Social Vulnerability | 75.5 / 100 |
| Community Resilience | 65.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
27 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Sep 25, 1998 | 2 km SW of Adamsville, Pennsylvania | M4.5 | 145 km | 5 km |
| Jun 10, 2019 | 1 km NW of Timberlake, Ohio | M4.0 | 143 km | 2 km |
| Mar 12, 2007 | Ohio | M3.7 | 98 km | 5 km |
| Oct 16, 1993 | 8 km SSE of Madison, Ohio | M3.6 | 147 km | 5 km |
| Nov 20, 2013 | 2 km SW of Buchtel, Ohio | M3.5 | 130 km | 8 km |
| Jun 3, 2017 | 1 km WNW of Batesville, Ohio | M3.4 | 54 km | 2 km |
| Jan 26, 1991 | 1 km NNE of Mayfield Heights, Ohio | M3.4 | 127 km | 5 km |
| Aug 31, 2011 | 3 km SE of Lowell, Ohio | M3.1 | 100 km | 5 km |
| Jan 9, 2008 | 6 km WNW of Mentor-on-the-Lake, Ohio | M3.1 | 147 km | 5 km |
| Apr 22, 2025 | 3 km ESE of Buffalo, Ohio | M3.1 | 57 km | 5 km |
| Apr 24, 2025 | 3 km S of Pleasant City, Ohio | M3.1 | 61 km | 6 km |
| Mar 30, 2024 | 2 km SSW of Maple Ridge, Ohio | M3.0 | 60 km | 6 km |
| Jun 5, 2011 | 5 km W of Lodi, Ohio | M3.0 | 95 km | 5 km |
| Apr 2, 2017 | 5 km W of Graysville, Ohio | M3.0 | 82 km | 4 km |
| May 9, 2025 | 3 km S of Pleasant City, Ohio | M2.9 | 62 km | 5 km |
| Aug 7, 2000 | 2 km S of Limaville, Ohio | M2.9 | 64 km | 5 km |
| Jan 4, 2022 | 3 km NW of Timberlake, Ohio | M2.8 | 144 km | 5 km |
| Apr 29, 2025 | 1 km SE of Pleasant City, Ohio | M2.8 | 59 km | 2 km |
| Feb 3, 2025 | 0 km NE of Reno, Ohio | M2.8 | 114 km | 10 km |
| Aug 31, 2011 | 2 km NNW of Belmont, West Virginia | M2.8 | 111 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
292 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 35 fatalities, 646 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 31, 1985 | EF5 | 90 km | 47.0 mi | 18 |
| Jul 12, 1992 | EF3 | 82 km | 8.0 mi | 0 |
| May 31, 1985 | EF3 | 86 km | 39.0 mi | 9 |
| Oct 12, 1978 | EF3 | 56 km | 7.3 mi | 0 |
| Jun 3, 1973 | EF3 | 90 km | 12.9 mi | 0 |
| May 8, 1969 | EF3 | 15 km | 2.0 mi | 1 |
| Aug 5, 1956 | EF3 | 99 km | 0.1 mi | 2 |
| Jun 5, 2024 | EF2 | 75 km | 1.3 mi | 0 |
| May 7, 2024 | EF2 | 49 km | 15.3 mi | 0 |
| Feb 28, 2024 | EF2 | 67 km | 4.1 mi | 0 |
| Aug 1, 2022 | EF2 | 79 km | 1.8 mi | 0 |
| Oct 21, 2021 | EF2 | 72 km | 15.7 mi | 0 |
| Jul 29, 2021 | EF2 | 38 km | 6.2 mi | 0 |
| Jul 29, 2021 | EF2 | 36 km | 2.7 mi | 0 |
| Sep 16, 2010 | EF2 | 68 km | 11.5 mi | 0 |
| Jun 22, 2006 | EF2 | 46 km | 6.0 mi | 0 |
| Nov 12, 2003 | EF2 | 17 km | 3.5 mi | 0 |
| Nov 12, 2003 | EF2 | 68 km | 12.0 mi | 0 |
| Nov 10, 2002 | EF2 | 91 km | 5.0 mi | 0 |
| Nov 10, 2002 | EF2 | 97 km | 9.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 2.3 in | Coldest |
| February | 30°F (-1°C) | 2.2 in | Driest |
| March | 39°F (4°C) | 3.2 in | |
| April | 49°F (10°C) | 3.5 in | |
| May | 59°F (15°C) | 3.9 in | |
| June | 68°F (20°C) | 3.9 in | |
| July | 73°F (23°C) | 4.1 in | Warmest, Wettest |
| August | 70°F (21°C) | 3.6 in | |
| September | 64°F (18°C) | 3.1 in | |
| October | 52°F (11°C) | 2.5 in | |
| November | 42°F (6°C) | 3.3 in | |
| December | 32°F (0°C) | 3.0 in |
Dennison has a seasonal temperature swing of 46°F / from 28°F in January to 73°F in July. Total annual precipitation is 38.5 inches, with July being the wettest month (4.1") and February the driest (2.2").