Weather & Climate in Delta, OH
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Delta experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 28°F in January while summers reach 75°F in July. Annual precipitation totals 35.0 inches. The area receives 37.4 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 725 feet.
Temperature
28°F Jan (-3°C)
75°F Jul (24°C)
| Annual Average | 52.2°F |
| 3% below US avg | |
| January Average | 28°F (-3°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 725 ft (221 m) |
| Area | 2.7 sq mi (6.9 km²) |
| Population Density | 682/sq mi |
| Coordinates | 41.5761°N, 84.0096°W |
| Timezone | America/New_York |
| County | Fulton County County |
| Nearest Airport | Detroit Metro Wayne County (DTW) 55 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 33.6 / 100 |
| Social Vulnerability | 22.0 / 100 |
| Community Resilience | 85.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
21 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.
| May 2, 2015 | 5 km S of Galesburg, Michigan | M4.2 | 138 km | 4 km |
| Sep 2, 1994 | 5 km SSW of DeWitt, Michigan | M3.5 | 144 km | 5 km |
| Apr 20, 2018 | Michigan | M3.4 | 102 km | 3 km |
| Jun 30, 2015 | 5 km NNE of Burlington, Michigan | M3.3 | 107 km | 5 km |
| Apr 17, 1990 | 8 km NW of Fort Recovery, Ohio | M3.0 | 143 km | 5 km |
| Jan 26, 2012 | 5 km NE of Topeka, Indiana | M3.0 | 123 km | 5 km |
| Feb 23, 2011 | 18 km NE of Leamington, Canada | M3.0 | 146 km | 5 km |
| Apr 4, 1994 | 2 km WNW of Minster, Ohio | M2.9 | 135 km | 5 km |
| May 12, 2006 | 2 km E of Lima, Ohio | M2.8 | 93 km | 5 km |
| Apr 12, 2007 | 11 km NW of Put-in-Bay, Ohio | M2.8 | 92 km | 5 km |
| Nov 25, 1998 | 1 km SSW of New London, Ohio | M2.7 | 145 km | 5 km |
| May 14, 2010 | 1 km ENE of Gibsonburg, Ohio | M2.7 | 63 km | 5 km |
| May 20, 2023 | 3 km SSE of Walbridge, Ohio | M2.6 | 44 km | 6 km |
| May 14, 2017 | 18 km ENE of Leamington, Canada | M2.6 | 146 km | 5 km |
| Jun 12, 2015 | 6 km NW of Convoy, Ohio | M2.6 | 93 km | 5 km |
| Mar 18, 2024 | 4 km WSW of Millbury, Ohio | M2.5 | 45 km | 6 km |
| Sep 7, 2012 | 17 km ESE of Stony Point, Michigan | M2.5 | 84 km | 5 km |
| Mar 8, 2010 | 7 km ENE of Grosse Ile, Michigan | M2.5 | 102 km | 18 km |
| Jun 4, 1990 | 4 km SSE of Van Buren, Ohio | M2.5 | 62 km | 5 km |
| Feb 7, 2016 | 6 km W of Put-in-Bay, Ohio | M2.5 | 93 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
419 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 123 fatalities, 1,844 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 5, 2010 | EF4 | 39 km | 8.8 mi | 7 |
| Apr 11, 1965 | EF4 | 88 km | 32.5 mi | 13 |
| Apr 11, 1965 | EF4 | 98 km | 90.3 mi | 23 |
| Apr 11, 1965 | EF4 | 36 km | 5.6 mi | 18 |
| Apr 11, 1965 | EF4 | 86 km | 80.5 mi | 21 |
| May 12, 1956 | EF4 | 99 km | 6.8 mi | 0 |
| Jun 8, 1953 | EF4 | 41 km | 118.0 mi | 17 |
| Jun 8, 1953 | EF4 | 43 km | 5.4 mi | 4 |
| Aug 24, 2016 | EF3 | 90 km | 5.2 mi | 0 |
| Mar 15, 2012 | EF3 | 91 km | 7.6 mi | 0 |
| Nov 10, 2002 | EF3 | 88 km | 21.0 mi | 1 |
| Oct 24, 2001 | EF3 | 85 km | 32.0 mi | 0 |
| Mar 27, 1991 | EF3 | 88 km | 21.0 mi | 1 |
| Mar 27, 1991 | EF3 | 52 km | 5.0 mi | 0 |
| May 15, 1986 | EF3 | 89 km | 1.2 mi | 0 |
| May 2, 1983 | EF3 | 31 km | 5.0 mi | 1 |
| Jun 15, 1982 | EF3 | 91 km | 13.0 mi | 1 |
| May 11, 1974 | EF3 | 94 km | 0.9 mi | 1 |
| Apr 3, 1974 | EF3 | 69 km | 8.7 mi | 0 |
| Apr 3, 1974 | EF3 | 48 km | 0.3 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-3°C) | 2.4 in | Coldest |
| February | 30°F (-1°C) | 2.3 in | Driest |
| March | 39°F (4°C) | 2.6 in | |
| April | 51°F (11°C) | 3.5 in | |
| May | 62°F (17°C) | 3.8 in | Wettest |
| June | 72°F (22°C) | 3.5 in | |
| July | 75°F (24°C) | 3.3 in | Warmest |
| August | 74°F (23°C) | 3.2 in | |
| September | 66°F (19°C) | 2.9 in | |
| October | 55°F (13°C) | 2.6 in | |
| November | 43°F (6°C) | 2.7 in | |
| December | 33°F (0°C) | 2.4 in |
Delta has a seasonal temperature swing of 48°F / from 28°F in January to 75°F in July. Total annual precipitation is 35.0 inches, with May being the wettest month (3.8") and February the driest (2.3").