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Weather & Climate in South Monroe, MI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
South Monroe experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 25°F in January while summers reach 74°F in July. The area gets 282 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 38. The city sits at an elevation of 598 feet.
Temperature
25°F Jan (-4°C)
74°F Jul (23°C)
| Annual Average | 49.9°F |
| 8% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 282 days/yr |
Geography
| Elevation | 598 ft (182 m) |
| Area | 2.4 sq mi (6.1 km²) |
| Population Density | 2,786/sq mi |
| Coordinates | 41.8927°N, 83.4186°W |
| Timezone | America/Detroit |
| County | Monroe County County |
| Nearest Airport | Detroit Metro Wayne County (DTW) 22 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 82.5 / 100 |
| Social Vulnerability | 25.4 / 100 |
| Community Resilience | 86.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively High |
| Drought | No Rating |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
18 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.5.
| Sep 2, 1994 | 5 km SSW of DeWitt, Michigan | M3.5 | 140 km | 5 km |
| Apr 20, 2018 | Michigan | M3.4 | 42 km | 3 km |
| Jun 30, 2015 | 5 km NNE of Burlington, Michigan | M3.3 | 137 km | 5 km |
| Feb 23, 2011 | 18 km NE of Leamington, Canada | M3.0 | 87 km | 5 km |
| Jun 5, 2011 | 5 km W of Lodi, Ohio | M3.0 | 147 km | 5 km |
| May 12, 2006 | 2 km E of Lima, Ohio | M2.8 | 140 km | 5 km |
| Apr 12, 2007 | 11 km NW of Put-in-Bay, Ohio | M2.8 | 45 km | 5 km |
| May 14, 2010 | 1 km ENE of Gibsonburg, Ohio | M2.7 | 57 km | 5 km |
| Nov 25, 1998 | 1 km SSW of New London, Ohio | M2.7 | 124 km | 5 km |
| May 20, 2023 | 3 km SSE of Walbridge, Ohio | M2.6 | 38 km | 6 km |
| May 14, 2017 | 18 km ENE of Leamington, Canada | M2.6 | 88 km | 5 km |
| Jun 4, 1990 | 4 km SSE of Van Buren, Ohio | M2.5 | 90 km | 5 km |
| Mar 18, 2024 | 4 km WSW of Millbury, Ohio | M2.5 | 38 km | 6 km |
| Sep 7, 2012 | 17 km ESE of Stony Point, Michigan | M2.5 | 29 km | 5 km |
| Mar 8, 2010 | 7 km ENE of Grosse Ile, Michigan | M2.5 | 42 km | 18 km |
| Feb 7, 2016 | 6 km W of Put-in-Bay, Ohio | M2.5 | 51 km | 5 km |
| May 23, 2022 | 2 km NNW of Corunna, Canada | M2.5 | 138 km | 5 km |
| Feb 17, 2013 | 31 km E of Leamington, Canada | M2.5 | 100 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
351 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 78 fatalities, 1,487 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 5, 2010 | EF4 | 39 km | 8.8 mi | 7 |
| Mar 20, 1976 | EF4 | 70 km | 3.8 mi | 1 |
| Apr 11, 1965 | EF4 | 29 km | 5.6 mi | 18 |
| May 8, 1964 | EF4 | 99 km | 3.3 mi | 11 |
| Jul 4, 1957 | EF4 | 74 km | 29.9 mi | 0 |
| May 12, 1956 | EF4 | 43 km | 6.8 mi | 0 |
| Jun 8, 1953 | EF4 | 18 km | 5.4 mi | 4 |
| Jun 8, 1953 | EF4 | 85 km | 118.0 mi | 17 |
| Mar 15, 2012 | EF3 | 71 km | 7.6 mi | 0 |
| Nov 10, 2002 | EF3 | 91 km | 21.0 mi | 1 |
| Mar 27, 1991 | EF3 | 100 km | 5.0 mi | 0 |
| Sep 14, 1990 | EF3 | 65 km | 24.0 mi | 0 |
| May 2, 1983 | EF3 | 71 km | 5.0 mi | 1 |
| May 2, 1983 | EF3 | 73 km | 23.0 mi | 0 |
| Jun 15, 1982 | EF3 | 94 km | 13.0 mi | 1 |
| Mar 20, 1976 | EF3 | 97 km | 17.1 mi | 1 |
| May 11, 1974 | EF3 | 76 km | 0.9 mi | 1 |
| Apr 3, 1974 | EF3 | 13 km | 0.3 mi | 0 |
| May 10, 1973 | EF3 | 74 km | 50.1 mi | 6 |
| Aug 2, 1972 | EF3 | 71 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 1.8 in | Coldest |
| February | 27°F (-3°C) | 1.8 in | Driest |
| March | 36°F (2°C) | 2.6 in | |
| April | 48°F (9°C) | 3.1 in | |
| May | 59°F (15°C) | 3.2 in | |
| June | 69°F (21°C) | 3.6 in | Wettest |
| July | 74°F (23°C) | 3.2 in | Warmest |
| August | 71°F (22°C) | 3.4 in | |
| September | 64°F (18°C) | 3.3 in | |
| October | 52°F (11°C) | 2.4 in | |
| November | 41°F (5°C) | 2.9 in | |
| December | 29°F (-2°C) | 2.7 in |
South Monroe has a seasonal temperature swing of 48°F / from 25°F in January to 74°F in July. Total annual precipitation is 33.7 inches, with June being the wettest month (3.6") and February the driest (1.8").