National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Lafayette, Lafayette Regional Airport (KLFT)

Lat: 30.2°NLon: 91.99°WElev: 39ft.

Fair

84°F

29°C

Humidity 77%
Wind Speed S 6 mph
Barometer 30.12 in (1019.9 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 6 Aug 8:53 pm CDT
Extended Forecast for

Mermentau LA

  • Tonight

    Tonight: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 92. Heat index values as high as 103. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Heat index values as high as 102. Calm wind becoming northeast around 5 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny, with a high near 93. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 40%.

    High: 93 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm.

    Low: 75 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 1pm. Sunny, with a high near 92. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 60%.

    High: 92 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm.

    Low: 75 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 75. Calm wind.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 92. Heat index values as high as 103. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Mostly clear, with a low around 74. Calm wind.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Heat index values as high as 102. Calm wind becoming northeast around 5 mph.
Friday Night
Mostly clear, with a low around 74. Calm wind.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny, with a high near 93. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 40%.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Sunny, with a high near 92. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm.
Monday
Showers and thunderstorms likely, mainly after 1pm. Sunny, with a high near 92. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 76.
Tuesday
A 50 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mermentau LA
 30.18°N 92.58°W
Last Update:
6:45 pm CDT Aug 6, 2025
Forecast Valid:
9pm CDT Aug 6, 2025-6pm CDT Aug 13, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation