St. Martin, MS
Full City Profile · Mississippi · Jackson County County
3.5
/5.0
B+
Good
7,797
Population
1,817/sq mi density
$53,488
Median Income
$25,700 per capita
$171,300
Home Value
$247,627 Zillow
$1,040
Median Rent
33.4% income on rent
68°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$53,488 median income, 7.0% unemployment
A+
Affordability
4.9 / 5.0
$171,300 home value, $1,040/mo rent
C
Education
2.3 / 5.0
16.7% bachelor's degree or higher
St. Martin enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 52°F in January while summers reach 83°F in July. Annual precipitation totals 65.9 inches. The area receives 0.3 inches of snow annually. Air quality is rated Good with a median AQI of 44.
Temperature
52°F Jan (11°C)
83°F Jul (28°C)
| Annual Average | 68.3°F |
| 26% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 83°F (28°C) |
Geography
| Elevation | 10 ft (3 m) |
| Area | 5.1 sq mi (13.2 km²) |
| Population Density | 1,817/sq mi |
| Coordinates | 30.4381°N, 88.8617°W |
| Timezone | America/Chicago |
| County | Jackson County County |
| Nearest Airport | Gulfport-Biloxi International (GPT) 13 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 65.0% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0460 ppm |
| NO₂ (Nitrogen Dioxide) | 6.6 ppb |
| SO₂ (Sulfur Dioxide) | -0.32 ppb |
| PM2.5 (Fine Particles) | 9.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.3 / 100 |
| Social Vulnerability | 52.4 / 100 |
| Community Resilience | 86.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 5.4 in | Coldest |
| February | 56°F (13°C) | 4.5 in | |
| March | 61°F (16°C) | 5.1 in | |
| April | 68°F (20°C) | 4.9 in | |
| May | 75°F (24°C) | 5.2 in | |
| June | 81°F (27°C) | 6.9 in | |
| July | 83°F (28°C) | 8.2 in | Warmest, Wettest |
| August | 83°F (28°C) | 7.5 in | |
| September | 79°F (26°C) | 5.7 in | |
| October | 70°F (21°C) | 4.0 in | |
| November | 60°F (15°C) | 3.8 in | Driest |
| December | 54°F (12°C) | 4.8 in |
St. Martin has a seasonal temperature swing of 31°F / from 52°F in January to 83°F in July. Total annual precipitation is 65.9 inches, with July being the wettest month (8.2") and November the driest (3.8").