Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Lafayette, Lafayette Regional Airport (KLFT)

Lat: 30.2°NLon: 91.99°WElev: 39ft.

Fair

80°F

27°C

Humidity 85%
Wind Speed SW 6 mph
Barometer 30.01 in (1016.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 19 Aug 1:53 am CDT
Extended Forecast for

Mermentau LA

  • Overnight

    Overnight: Partly cloudy, with a low around 78. Southwest wind around 5 mph.

    Low: 78 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 95. Heat index values as high as 106. Light west wind becoming southwest 5 to 10 mph in the morning.

    High: 95 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Heat index values as high as 106. Calm wind becoming west around 5 mph in the morning.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Southwest wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 98. Calm wind becoming west around 5 mph in the morning.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 78. Southwest wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Calm wind becoming west around 5 mph in the morning.

    High: 99 °F

    Hot

  • Saturday Night

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

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 78. Southwest wind around 5 mph.
Wednesday
Mostly sunny, with a high near 95. Heat index values as high as 106. Light west wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 97. Heat index values as high as 106. Calm wind becoming west around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 77. Southwest wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 98. Calm wind becoming west around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 78. Southwest wind around 5 mph.
Saturday
Sunny and hot, with a high near 99. Calm wind becoming west around 5 mph in the morning.
Saturday Night
Mostly clear, with a low around 77. Southwest wind 5 to 10 mph becoming light after midnight.
Sunday
Sunny and hot, with a high near 100.
Sunday Night
Mostly clear, with a low around 77.
Monday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 98.
Monday Night
Mostly clear, with a low around 77.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 97.
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ABOUT THIS FORECAST

 
Point Forecast:
Mermentau LA
 30.19°N 92.61°W
1:55 am CDT Aug 19, 2026
2am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

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