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Weather & Climate in Mamou, LA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mamou enjoys a temperate climate with an average annual temperature of 67°F (20°C). Winters average 50°F in January while summers reach 83°F in July. The area gets 313 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 61.6 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 59 feet.
Temperature
50°F Jan (10°C)
83°F Jul (28°C)
| Annual Average | 67.3°F |
| 25% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 313 days/yr |
Geography
| Elevation | 59 ft (18 m) |
| Area | 1.4 sq mi (3.6 km²) |
| Population Density | 2,045/sq mi |
| Coordinates | 30.6349°N, 92.4179°W |
| Timezone | America/Chicago |
| County | Evangeline Parish County |
| Nearest Airport | Lafayette Regional/Paul Fournet Field (LFT) 39 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 75.9 / 100 |
| Social Vulnerability | 89.6 / 100 |
| Community Resilience | 20.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | No Rating |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Hurricane History
22 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Francine | Category 2 | 104 mph | 183 km |
| 2021 | Ida | Category 4 | 150 mph | 155 km |
| 2020 | Laura | Category 4 | 150 mph | 95 km |
| 2020 | Zeta | Category 3 | 115 mph | 237 km |
| 2020 | Delta | Category 2 | 104 mph | 75 km |
| 2019 | Barry | Category 1 | 75 mph | 117 km |
| 2012 | Isaac | Category 1 | 81 mph | 230 km |
| 2008 | Ike | Category 2 | 109 mph | 260 km |
| 2008 | Gustav | Category 2 | 109 mph | 62 km |
| 2007 | Humberto | Category 1 | 92 mph | 119 km |
| 2005 | Katrina | Category 4 | 144 mph | 273 km |
| 2005 | Rita | Category 3 | 121 mph | 156 km |
| 2005 | Cindy | Category 1 | 75 mph | 275 km |
| 2002 | Lili | Category 3 | 121 mph | 72 km |
| 1997 | Danny | Category 1 | 81 mph | 290 km |
| 1992 | Andrew | Category 4 | 144 mph | 70 km |
| 1989 | Jerry | Category 1 | 86 mph | 296 km |
| 1989 | Chantal | Category 1 | 81 mph | 221 km |
| 1986 | Bonnie | Category 1 | 86 mph | 198 km |
| 1985 | Elena | Category 2 | — | 251 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
714 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 54 fatalities, 705 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Dec 3, 1953 | EF4 | 77 km | 85.5 mi | 9 |
| Apr 10, 2021 | EF3 | 44 km | 8.7 mi | 1 |
| May 17, 2020 | EF3 | 24 km | 3.9 mi | 1 |
| Dec 16, 2019 | EF3 | 84 km | 62.6 mi | 1 |
| Nov 21, 1992 | EF3 | 75 km | 6.0 mi | 0 |
| May 20, 1983 | EF3 | 56 km | 2.0 mi | 0 |
| Feb 9, 1983 | EF3 | 35 km | 21.0 mi | 0 |
| Feb 9, 1983 | EF3 | 24 km | 3.0 mi | 0 |
| Jan 31, 1983 | EF3 | 70 km | 6.0 mi | 1 |
| Jan 31, 1983 | EF3 | 41 km | 5.0 mi | 1 |
| Jun 5, 1981 | EF3 | 74 km | 4.3 mi | 0 |
| Apr 21, 1977 | EF3 | 58 km | 3.8 mi | 1 |
| Oct 29, 1974 | EF3 | 61 km | 7.3 mi | 0 |
| Oct 29, 1974 | EF3 | 65 km | 31.3 mi | 2 |
| Apr 17, 1973 | EF3 | 84 km | 0.5 mi | 0 |
| Feb 29, 1972 | EF3 | 100 km | 1.0 mi | 0 |
| Jun 22, 1971 | EF3 | 78 km | 0.1 mi | 0 |
| Feb 12, 1971 | EF3 | 88 km | 3.6 mi | 0 |
| Dec 25, 1969 | EF3 | 72 km | 1.5 mi | 1 |
| May 1, 1967 | EF3 | 49 km | 5.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: LACASSINE POOL (16,640 acres, 2005).
| Year | Name | Acres Burned | Distance |
| 2005 | LACASSINE POOL | 16,640 | 88 km |
| 2000 | UNNAMED | 12,496 | 25 km |
| 2023 | HWY 113 | 7,104 | 57 km |
| 2005 | UNNAMED | 6,588 | 90 km |
| 2021 | C-368 366 365 364 75 | 5,919 | 61 km |
| 2013 | UNNAMED | 5,381 | 68 km |
| 2013 | UNNAMED | 5,044 | 83 km |
| 2005 | UNNAMED | 4,928 | 95 km |
| 1995 | UNNAMED | 4,875 | 91 km |
| 2003 | UNNAMED | 4,872 | 100 km |
| 2013 | UNNAMED | 4,777 | 68 km |
| 1996 | UNNAMED | 4,678 | 95 km |
| 2019 | C-371/369/34 | 4,481 | 61 km |
| 2024 | RX CALV C-262-265 | 4,445 | 70 km |
| 2019 | UNNAMED | 4,310 | 75 km |
| 2017 | UNNAMED | 4,279 | 81 km |
| 2018 | C-238 | 3,709 | 78 km |
| 2017 | UNNAMED | 3,648 | 59 km |
| 2023 | IDA | 3,628 | 87 km |
| 2000 | UNNAMED | 3,599 | 66 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 5.8 in | Coldest |
| February | 53°F (12°C) | 4.5 in | Driest |
| March | 60°F (16°C) | 5.0 in | |
| April | 67°F (19°C) | 4.6 in | |
| May | 75°F (24°C) | 5.8 in | |
| June | 80°F (27°C) | 5.3 in | |
| July | 83°F (28°C) | 5.4 in | Warmest |
| August | 82°F (28°C) | 4.9 in | |
| September | 78°F (25°C) | 5.0 in | |
| October | 68°F (20°C) | 4.5 in | |
| November | 59°F (15°C) | 5.0 in | |
| December | 53°F (11°C) | 6.0 in | Wettest |
Mamou has a seasonal temperature swing of 33°F / from 50°F in January to 83°F in July. Total annual precipitation is 61.9 inches, with December being the wettest month (6.0") and February the driest (4.5").