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Weather & Climate in Marysville, MI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Marysville experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 25°F in January while summers reach 73°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 34.9 inches. The area receives 35.5 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 609 feet.
Temperature
25°F Jan (-4°C)
73°F Jul (23°C)
| Annual Average | 49.5°F |
| 8% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 609 ft (186 m) |
| Area | 8.3 sq mi (21.5 km²) |
| Population Density | 1,356/sq mi |
| Coordinates | 42.9085°N, 82.4810°W |
| Timezone | America/Detroit |
| County | St. Clair County County |
| Nearest Airport | St Clair County International (PHN) 2 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 82.0 / 100 |
| Social Vulnerability | 32.6 / 100 |
| Community Resilience | 89.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively High |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
11 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.4.
| Apr 20, 2018 | Michigan | M3.4 | 98 km | 3 km |
| Feb 23, 2011 | 18 km NE of Leamington, Canada | M3.0 | 84 km | 5 km |
| Apr 12, 2007 | 11 km NW of Put-in-Bay, Ohio | M2.8 | 137 km | 5 km |
| Sep 22, 1999 | 16 km NW of Mentor-on-the-Lake, Ohio | M2.8 | 146 km | 18 km |
| Apr 28, 2002 | Ohio | M2.7 | 149 km | 5 km |
| May 14, 2017 | 18 km ENE of Leamington, Canada | M2.6 | 86 km | 5 km |
| Sep 7, 2012 | 17 km ESE of Stony Point, Michigan | M2.5 | 126 km | 5 km |
| Mar 8, 2010 | 7 km ENE of Grosse Ile, Michigan | M2.5 | 96 km | 18 km |
| Feb 7, 2016 | 6 km W of Put-in-Bay, Ohio | M2.5 | 144 km | 5 km |
| May 23, 2022 | 2 km NNW of Corunna, Canada | M2.5 | 3 km | 5 km |
| Feb 17, 2013 | 31 km E of Leamington, Canada | M2.5 | 101 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
160 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 24 fatalities, 669 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 20, 1976 | EF4 | 88 km | 3.8 mi | 1 |
| May 8, 1964 | EF4 | 39 km | 3.3 mi | 11 |
| May 12, 1956 | EF4 | 95 km | 6.8 mi | 0 |
| May 12, 1956 | EF4 | 98 km | 6.6 mi | 3 |
| Jun 8, 1953 | EF4 | 63 km | 33.8 mi | 0 |
| May 21, 1953 | EF4 | 10 km | 10.0 mi | 2 |
| Jul 2, 1997 | EF3 | 97 km | 1.7 mi | 1 |
| Sep 14, 1990 | EF3 | 94 km | 24.0 mi | 0 |
| Sep 2, 1984 | EF3 | 41 km | 15.6 mi | 0 |
| Aug 8, 1984 | EF3 | 100 km | 0.8 mi | 0 |
| May 2, 1983 | EF3 | 64 km | 23.0 mi | 0 |
| Mar 20, 1976 | EF3 | 46 km | 17.1 mi | 1 |
| Jul 14, 1974 | EF3 | 88 km | 1.0 mi | 0 |
| Aug 2, 1972 | EF3 | 92 km | 0.1 mi | 0 |
| Nov 20, 1957 | EF3 | 76 km | 1.5 mi | 1 |
| Feb 28, 2024 | EF2 | 97 km | 5.7 mi | 0 |
| May 28, 2013 | EF2 | 89 km | 4.6 mi | 0 |
| Mar 15, 2012 | EF2 | 81 km | 4.6 mi | 0 |
| Sep 13, 2008 | EF2 | 99 km | 2.7 mi | 0 |
| Jul 2, 1997 | EF2 | 85 km | 5.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 2.7 m (9 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1823 | LAKE ERIE | Unknown | 2.7 m | - | 139 km |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 22 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.1 in | |
| February | 24°F (-5°C) | 2.0 in | Coldest, Driest |
| March | 33°F (1°C) | 2.3 in | |
| April | 44°F (7°C) | 2.9 in | |
| May | 56°F (13°C) | 3.0 in | |
| June | 66°F (19°C) | 3.3 in | |
| July | 73°F (23°C) | 2.8 in | Warmest |
| August | 70°F (21°C) | 3.1 in | |
| September | 63°F (17°C) | 3.9 in | Wettest |
| October | 52°F (11°C) | 2.8 in | |
| November | 40°F (4°C) | 3.2 in | |
| December | 29°F (-2°C) | 2.6 in |
Marysville has a seasonal temperature swing of 50°F / from 24°F in February to 73°F in July. Total annual precipitation is 33.9 inches, with September being the wettest month (3.9") and February the driest (2.0").