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Decatur, MI
Full City Profile · Michigan · Kalamazoo County County
2.9
/5.0
C+
Fair
1,814
Population
1,344/sq mi density
$58,281
Median Income
$28,168 per capita
$121,900
Home Value
$209,370 Zillow
$779
Median Rent
25.2% income on rent
49°F
Avg Temperature
246 sunny days/yr
462
Violent Crime/100K
2,137 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$58,281 median income, 4.1% unemployment
A+
Affordability
5.0 / 5.0
$121,900 home value, $779/mo rent
F
Safety
1.0 / 5.0
462 violent crimes/100K (22% above avg)
C
Education
2.1 / 5.0
14.3% bachelor's degree or higher
Decatur experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 25°F in January while summers reach 72°F in July. The area gets 246 sunny days per year. Annual precipitation totals 41.1 inches. The area receives 109.0 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
25°F Jan (-4°C)
72°F Jul (22°C)
| Annual Average | 48.6°F |
| 10% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 790 ft (241 m) |
| Area | 1.4 sq mi (3.5 km²) |
| Population Density | 1,344/sq mi |
| Coordinates | 42.1077°N, 85.9750°W |
| Timezone | America/Detroit |
| County | Kalamazoo County County |
| Nearest Airport | Southwest Michigan Regional (BEH) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0452 ppm |
| PM2.5 (Fine Particles) | 11.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 81.7 / 100 |
| Social Vulnerability | 18.5 / 100 |
| Community Resilience | 91.5 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 88 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.1 in | Coldest |
| February | 26°F (-3°C) | 1.7 in | Driest |
| March | 36°F (2°C) | 2.6 in | |
| April | 47°F (9°C) | 3.6 in | |
| May | 59°F (15°C) | 3.4 in | |
| June | 68°F (20°C) | 3.7 in | |
| July | 72°F (22°C) | 3.7 in | Warmest |
| August | 70°F (21°C) | 3.5 in | |
| September | 62°F (17°C) | 4.1 in | Wettest |
| October | 51°F (11°C) | 3.1 in | |
| November | 39°F (4°C) | 3.2 in | |
| December | 28°F (-2°C) | 3.1 in |
Decatur has a seasonal temperature swing of 47°F / from 25°F in January to 72°F in July. Total annual precipitation is 37.9 inches, with September being the wettest month (4.1") and February the driest (1.7").