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.

A Few Clouds

76°F

24°C

Humidity 97%
Wind Speed Calm
Barometer 29.97 in (1014.8 mb)
Dewpoint 75°F (24°C)
Visibility 8.00 mi
Heat Index75°F (24°C)
Last update 18 Jun 12:53 am CDT
Extended Forecast for

Mermentau LA

  • Overnight

    Overnight: Mostly clear, with a low around 76. South wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 90. Heat index values as high as 103. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. South wind 5 to 10 mph becoming light after midnight.

    Low: 77 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 99. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 60%.

    High: 91 °F

    T-storms
    Likely

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 76. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 91 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. South wind around 5 mph becoming calm after midnight.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Calm wind becoming south around 5 mph in the morning.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Southeast wind around 5 mph.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 76. South wind around 5 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 90. Heat index values as high as 103. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 77. South wind 5 to 10 mph becoming light after midnight.
Juneteenth
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 99. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 60%.
Thursday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 76. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%.
Friday Night
Mostly clear, with a low around 76. South wind around 5 mph becoming calm after midnight.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Calm wind becoming south around 5 mph in the morning.
Saturday Night
Mostly clear, with a low around 75. Southeast wind around 5 mph.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Sunny, with a high near 90. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Monday
Showers and thunderstorms. High near 90. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Tuesday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Mermentau LA
 30.18°N 92.58°W
Last Update:
12:46 am CDT Jun 18, 2025
Forecast Valid:
12am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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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