Decatur, MI
Full City Profile · Michigan · Kalamazoo County County
2.8
/5.0
C+
Fair
1,814
Population
1,344/sq mi density
$58,281
Median Income
$28,168 per capita
$121,900
Home Value
$220,276 Zillow
$779
Median Rent
25.2% income on rent
48°F
Avg Temperature
303
Violent Crime/100K
2,424 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$58,281 median income, 6.7% unemployment
A+
Affordability
5.0 / 5.0
$121,900 home value, $779/mo rent
F
Safety
1.0 / 5.0
303 violent crimes/100K
C
Education
2.1 / 5.0
14.3% bachelor's degree or higher
Decatur experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 24°F in January while summers reach 71°F in July. Annual precipitation totals 41.7 inches. The area receives 86.6 inches of snow annually. Air quality is rated Good with a median AQI of 45.
Temperature
24°F Jan (-5°C)
71°F Jul (22°C)
| Annual Average | 48.1°F |
| 11% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 71°F (22°C) |
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 | 45.0 |
| Rating | Good |
| Good Days % | 63.9% |
| Unhealthy Days | 0 |
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 | 24°F (-5°C) | 3.1 in | Coldest |
| February | 26°F (-3°C) | 2.4 in | Driest |
| March | 35°F (2°C) | 2.4 in | |
| April | 46°F (8°C) | 3.7 in | |
| May | 58°F (14°C) | 4.2 in | |
| June | 67°F (20°C) | 4.3 in | |
| July | 71°F (22°C) | 4.1 in | Warmest |
| August | 69°F (21°C) | 4.1 in | |
| September | 62°F (17°C) | 3.4 in | |
| October | 50°F (10°C) | 4.3 in | Wettest |
| November | 39°F (4°C) | 2.9 in | |
| December | 29°F (-1°C) | 2.8 in |
Decatur has a seasonal temperature swing of 47°F / from 24°F in January to 71°F in July. Total annual precipitation is 41.7 inches, with October being the wettest month (4.3") and February the driest (2.4").