All Countries
Grand Coteau, LA
Full City Profile · Louisiana · Lafayette Parish County
2.7
/5.0
C+
Fair
948
Population
392/sq mi density
$48,036
Median Income
$20,723 per capita
$87,400
Home Value
$202,504 Zillow
$673
Median Rent
16.1% income on rent
68°F
Avg Temperature
313 sunny days/yr
425
Violent Crime/100K
3,130 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$48,036 median income, 1.8% unemployment
A+
Affordability
5.0 / 5.0
$87,400 home value, $673/mo rent
F
Safety
1.0 / 5.0
425 violent crimes/100K (12% above avg)
C
Education
2.0 / 5.0
13.1% bachelor's degree or higher
Grand Coteau enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 53°F in January while summers reach 82°F in July. The area gets 313 sunny days per year. Annual precipitation totals 61.6 inches. Air quality is rated Good with a median AQI of 42.
Temperature
53°F Jan (11°C)
82°F Jul (28°C)
| Annual Average | 68.3°F |
| 26% above US avg | |
| January Average | 53°F (11°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 313 days/yr |
Geography
| Elevation | 55 ft (17 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 392/sq mi |
| Coordinates | 30.4202°N, 92.0438°W |
| Timezone | America/Chicago |
| County | Lafayette Parish County |
| Nearest Airport | Lafayette Regional/Paul Fournet Field (LFT) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0422 ppm |
| PM2.5 (Fine Particles) | 8.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.2 / 100 |
| Social Vulnerability | 32.4 / 100 |
| Community Resilience | 72.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very High |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Very High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (11°C) | 6.1 in | Coldest, Wettest |
| February | 53°F (12°C) | 4.5 in | |
| March | 60°F (16°C) | 4.7 in | |
| April | 67°F (20°C) | 4.8 in | |
| May | 74°F (24°C) | 5.6 in | |
| June | 80°F (27°C) | 5.7 in | |
| July | 82°F (28°C) | 5.8 in | Warmest |
| August | 82°F (28°C) | 4.9 in | |
| September | 78°F (25°C) | 4.9 in | |
| October | 68°F (20°C) | 4.5 in | Driest |
| November | 59°F (15°C) | 5.0 in | |
| December | 53°F (12°C) | 5.6 in |
Grand Coteau has a seasonal temperature swing of 30°F / from 53°F in January to 82°F in July. Total annual precipitation is 62.0 inches, with January being the wettest month (6.1") and October the driest (4.5").