Ruby, MI
Full City Profile · Michigan · Sanilac County County
3.9
/5.0
B+
Good
705
Population
188/sq mi density
$66,910
Median Income
$32,202 per capita
$211,200
Home Value
$314,661 Zillow
$1,087
Median Rent
18.1% income on rent
50°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$66,910 median income, 0.9% unemployment
A+
Affordability
4.9 / 5.0
$211,200 home value, $1,087/mo rent
C
Education
2.4 / 5.0
18.0% bachelor's degree or higher
Ruby 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. Annual precipitation totals 34.9 inches. The area receives 35.5 inches of snow annually.
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) |
Geography
| Elevation | 700 ft (213 m) |
| Area | 3.8 sq mi (9.7 km²) |
| Population Density | 188/sq mi |
| Coordinates | 43.0329°N, 82.6118°W |
| Timezone | America/Detroit |
| County | Sanilac County County |
| Nearest Airport | St Clair County International (PHN) 9 miles away |
Precipitation & Snow
Air Quality
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)
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 | - | 19 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.5 in | Coldest |
| February | 27°F (-3°C) | 2.1 in | Driest |
| March | 35°F (2°C) | 2.2 in | |
| April | 46°F (8°C) | 3.2 in | |
| May | 58°F (14°C) | 3.5 in | |
| June | 68°F (20°C) | 3.6 in | Wettest |
| July | 73°F (23°C) | 3.3 in | Warmest |
| August | 72°F (22°C) | 3.1 in | |
| September | 65°F (18°C) | 3.3 in | |
| October | 53°F (12°C) | 3.1 in | |
| November | 41°F (5°C) | 2.8 in | |
| December | 31°F (-0°C) | 2.2 in |
Ruby has a seasonal temperature swing of 48°F / from 25°F in January to 73°F in July. Total annual precipitation is 34.9 inches, with June being the wettest month (3.6") and February the driest (2.1").