Grass Lake, MI
Full City Profile · Michigan · Jackson County County
4.3
/5.0
A
Great
1,235
Population
1,314/sq mi density
$74,306
Median Income
$38,894 per capita
$199,400
Home Value
$346,675 Zillow
$954
Median Rent
25.0% income on rent
49°F
Avg Temperature
A
Overall
4.3 / 5.0
Strong
A
Economy
4.3 / 5.0
$74,306 median income, 2.6% unemployment
A+
Affordability
5.0 / 5.0
$199,400 home value, $954/mo rent
B
Education
3.5 / 5.0
30.9% bachelor's degree or higher
Grass Lake experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 24°F in January while summers reach 72°F in July. Annual precipitation totals 32.2 inches. The area receives 32.9 inches of snow annually.
Temperature
24°F Jan (-4°C)
72°F Jul (22°C)
| Annual Average | 48.9°F |
| 9% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 1,026 ft (313 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 1,314/sq mi |
| Coordinates | 42.2508°N, 84.2062°W |
| Timezone | America/Detroit |
| County | Jackson County County |
| Nearest Airport | Capital Region International (LAN) 41 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 76.5 / 100 |
| Social Vulnerability | 34.2 / 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 Moderate |
| 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)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 1.7 in | Coldest |
| February | 27°F (-3°C) | 1.5 in | Driest |
| March | 36°F (2°C) | 1.9 in | |
| April | 48°F (9°C) | 2.9 in | |
| May | 59°F (15°C) | 3.4 in | |
| June | 68°F (20°C) | 3.6 in | |
| July | 72°F (22°C) | 3.4 in | Warmest |
| August | 70°F (21°C) | 3.8 in | Wettest |
| September | 63°F (17°C) | 3.0 in | |
| October | 51°F (11°C) | 2.9 in | |
| November | 40°F (4°C) | 2.3 in | |
| December | 30°F (-1°C) | 1.8 in |
Grass Lake has a seasonal temperature swing of 47°F / from 24°F in January to 72°F in July. Total annual precipitation is 32.2 inches, with August being the wettest month (3.8") and February the driest (1.5").