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Weather & Climate in Deckerville, MI
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Deckerville has a cool climate with an average annual temperature of 45°F (7°C). Winters average 22°F in January while summers reach 68°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 34.0 inches. The area receives 47.2 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 38. The city sits at an elevation of 816 feet.
Temperature
22°F Jan (-5°C)
68°F Jul (20°C)
| Annual Average | 45.4°F |
| 16% below US avg | |
| January Average | 22°F (-5°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 816 ft (249 m) |
| Area | 1.3 sq mi (3.2 km²) |
| Population Density | 846/sq mi |
| Coordinates | 43.5265°N, 82.7420°W |
| Timezone | America/Detroit |
| County | Sanilac County County |
| Nearest Airport | St Clair County International (PHN) 44 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 70.3 / 100 |
| Social Vulnerability | 72.0 / 100 |
| Community Resilience | 68.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.5.
| May 23, 2022 | 2 km NNW of Corunna, Canada | M2.5 | 74 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
151 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 19 fatalities, 468 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 8, 1964 | EF4 | 96 km | 3.3 mi | 11 |
| May 12, 1956 | EF4 | 96 km | 6.6 mi | 3 |
| Jun 8, 1953 | EF4 | 55 km | 33.8 mi | 0 |
| May 21, 1953 | EF4 | 68 km | 10.0 mi | 2 |
| Jul 2, 1997 | EF3 | 81 km | 1.7 mi | 1 |
| Jul 2, 1997 | EF3 | 89 km | 2.0 mi | 0 |
| Jun 21, 1996 | EF3 | 84 km | 1.0 mi | 0 |
| Sep 2, 1984 | EF3 | 36 km | 15.6 mi | 0 |
| Aug 8, 1984 | EF3 | 97 km | 0.8 mi | 0 |
| Jun 12, 1984 | EF3 | 96 km | 48.0 mi | 0 |
| Mar 20, 1976 | EF3 | 94 km | 17.1 mi | 1 |
| Jul 14, 1974 | EF3 | 84 km | 1.0 mi | 0 |
| Jun 26, 2021 | EF2 | 59 km | 6.8 mi | 0 |
| Jun 22, 2015 | EF2 | 86 km | 11.3 mi | 0 |
| May 28, 2013 | EF2 | 97 km | 4.6 mi | 0 |
| Mar 15, 2012 | EF2 | 72 km | 4.6 mi | 0 |
| Jun 21, 1996 | EF2 | 44 km | 0.2 mi | 0 |
| Oct 4, 1990 | EF2 | 93 km | 3.0 mi | 0 |
| Aug 7, 1984 | EF2 | 70 km | 0.4 mi | 0 |
| May 19, 1983 | EF2 | 78 km | 1.8 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 1.5 m (5 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1952 | LAKE HURON, MI | Avalanche | 1.5 m | - | 55 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-5°C) | 1.9 in | |
| February | 22°F (-6°C) | 1.6 in | Coldest, Driest |
| March | 32°F (-0°C) | 2.2 in | |
| April | 43°F (6°C) | 2.6 in | |
| May | 54°F (12°C) | 2.6 in | |
| June | 64°F (18°C) | 3.1 in | |
| July | 68°F (20°C) | 2.7 in | Warmest |
| August | 67°F (20°C) | 3.3 in | |
| September | 61°F (16°C) | 3.8 in | Wettest |
| October | 49°F (10°C) | 2.8 in | |
| November | 38°F (3°C) | 2.8 in | |
| December | 27°F (-3°C) | 2.5 in |
Deckerville has a seasonal temperature swing of 46°F / from 22°F in February to 68°F in July. Total annual precipitation is 31.8 inches, with September being the wettest month (3.8") and February the driest (1.6").