Weather & Climate in Gillis, LA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gillis enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 51°F in January while summers reach 82°F in July. Annual precipitation totals 69.3 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 49. 53% of days have good air quality. The city sits at an elevation of 25 feet.
Temperature
51°F Jan (11°C)
82°F Jul (28°C)
| Annual Average | 67.9°F |
| 26% above US avg | |
| January Average | 51°F (11°C) |
| July Average | 82°F (28°C) |
Geography
| Elevation | 25 ft (8 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 457/sq mi |
| Coordinates | 30.3769°N, 93.1998°W |
| Timezone | America/Chicago |
| County | Calcasieu Parish County |
| Nearest Airport | Chennault International (CWF) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 49.0 |
| Rating | Good |
| Good Days % | 53.0% |
| Unhealthy Days | 4 |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.7 / 100 |
| Social Vulnerability | 61.3 / 100 |
| Community Resilience | 24.0 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| 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 High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Hurricane History
21 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 | 217 km |
| 2024 | Beryl | Category 1 | 92 mph | 295 km |
| 2021 | Ida | Category 4 | 150 mph | 231 km |
| 2021 | Nicholas | Category 1 | 75 mph | 299 km |
| 2020 | Laura | Category 4 | 150 mph | 24 km |
| 2020 | Zeta | Category 3 | 115 mph | 283 km |
| 2020 | Delta | Category 2 | 104 mph | 42 km |
| 2019 | Barry | Category 1 | 75 mph | 129 km |
| 2012 | Isaac | Category 1 | 81 mph | 282 km |
| 2008 | Gustav | Category 2 | 109 mph | 125 km |
| 2008 | Ike | Category 2 | 109 mph | 180 km |
| 2007 | Humberto | Category 1 | 92 mph | 39 km |
| 2005 | Rita | Category 3 | 127 mph | 78 km |
| 2002 | Lili | Category 3 | 121 mph | 96 km |
| 1992 | Andrew | Category 4 | 144 mph | 144 km |
| 1989 | Jerry | Category 1 | 86 mph | 218 km |
| 1989 | Chantal | Category 1 | 81 mph | 144 km |
| 1986 | Bonnie | Category 1 | 86 mph | 118 km |
| 1985 | Juan | Category 1 | 86 mph | 121 km |
| 1985 | Danny | Category 1 | 92 mph | 64 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
707 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 41 fatalities, 700 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 7, 1957 | EF4 | 60 km | 12.9 mi | 1 |
| Dec 3, 1953 | EF4 | 78 km | 85.5 mi | 9 |
| May 17, 2020 | EF3 | 90 km | 3.9 mi | 1 |
| Dec 16, 2019 | EF3 | 53 km | 62.6 mi | 1 |
| Mar 2, 1999 | EF3 | 89 km | 12.0 mi | 1 |
| Nov 21, 1992 | EF3 | 24 km | 6.0 mi | 0 |
| May 20, 1984 | EF3 | 66 km | 3.0 mi | 0 |
| May 20, 1983 | EF3 | 80 km | 5.0 mi | 0 |
| Feb 9, 1983 | EF3 | 98 km | 21.0 mi | 0 |
| Feb 9, 1983 | EF3 | 84 km | 3.0 mi | 0 |
| Jan 31, 1983 | EF3 | 100 km | 1.0 mi | 0 |
| Jan 31, 1983 | EF3 | 98 km | 6.0 mi | 1 |
| May 13, 1982 | EF3 | 83 km | 8.5 mi | 1 |
| Oct 29, 1974 | EF3 | 59 km | 31.3 mi | 2 |
| Apr 17, 1973 | EF3 | 14 km | 0.5 mi | 0 |
| Apr 17, 1973 | EF3 | 51 km | 0.5 mi | 0 |
| Feb 12, 1971 | EF3 | 17 km | 3.6 mi | 0 |
| Oct 11, 1970 | EF3 | 83 km | 4.3 mi | 0 |
| Dec 25, 1969 | EF3 | 99 km | 1.5 mi | 1 |
| May 1, 1967 | EF3 | 42 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: TIGER ISLAND (30,959 acres, 2023).
| Year | Name | Acres Burned | Distance |
| 2023 | TIGER ISLAND | 30,959 | 47 km |
| 2023 | LASBR-BIL-FY23-RX-PRESCRIBED FIRE | 18,392 | 56 km |
| 2005 | LACASSINE POOL | 16,640 | 53 km |
| 2002 | BAYOU COMPLEX | 15,744 | 73 km |
| 1993 | PF UNIT 5 | 15,059 | 72 km |
| 2000 | UNNAMED | 15,017 | 69 km |
| 2007 | UNIT 5 | 13,959 | 70 km |
| 2000 | UNNAMED | 12,496 | 67 km |
| 1990 | U 2 PF 90 1 | 12,490 | 68 km |
| 2005 | UNIT 4 05 01 | 11,749 | 69 km |
| 2003 | UNNAMED | 11,431 | 79 km |
| 2011 | SABINE WEST - 2011 (UNIT 3) | 10,195 | 61 km |
| 2014 | PINTAIL | 9,498 | 58 km |
| 1987 | U 1 PF 87 09 | 8,953 | 57 km |
| 1998 | UNIT 1 RX | 8,913 | 58 km |
| 2006 | UNNAMED | 8,563 | 88 km |
| 1996 | UNIT 7 | 8,298 | 76 km |
| 2011 | SABINE WEST 2011 UNIT 5 | 8,184 | 77 km |
| 2022 | NORTHLINE | 8,096 | 57 km |
| 2003 | UNNAMED | 7,414 | 91 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 51°F (11°C) | 6.6 in | Coldest |
| February | 55°F (13°C) | 4.3 in | |
| March | 61°F (16°C) | 4.1 in | Driest |
| April | 67°F (20°C) | 5.3 in | |
| May | 75°F (24°C) | 5.9 in | |
| June | 81°F (27°C) | 7.4 in | |
| July | 82°F (28°C) | 5.9 in | Warmest |
| August | 82°F (28°C) | 7.5 in | Wettest |
| September | 78°F (26°C) | 6.3 in | |
| October | 69°F (21°C) | 5.3 in | |
| November | 59°F (15°C) | 5.1 in | |
| December | 53°F (12°C) | 5.6 in |
Gillis has a seasonal temperature swing of 31°F / from 51°F in January to 82°F in July. Total annual precipitation is 69.3 inches, with August being the wettest month (7.5") and March the driest (4.1").