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

Louisiana Regional Airport (KREG)

Lat: 30.17°NLon: 90.94°WElev: 14ft.

Partly Cloudy

78°F

26°C

Humidity 67%
Wind Speed E 5 mph
Barometer 30.01 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 20 Nov 5:15 pm CST
Extended Forecast for

Old Jefferson LA

  • Tonight

    Tonight: A 30 percent chance of showers after 4am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Southeast wind around 5 mph.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 3pm, then a slight chance of showers between 3pm and 5pm. Mostly sunny, with a high near 82. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: Widespread dense fog, mainly after 4am. Otherwise, partly cloudy, with a low around 67. South wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear
    then Dense
    Fog

  • Saturday

    Saturday: A slight chance of showers and thunderstorms between noon and 3pm, then a slight chance of showers after 3pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.

    High: 81 °F

    Areas Fog
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60. Calm wind becoming southeast around 5 mph.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after noon. Partly sunny, with a high near 79. South wind 5 to 10 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 66. South wind around 5 mph.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers after 4am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Southeast wind around 5 mph.
Friday
A chance of showers and thunderstorms before 3pm, then a slight chance of showers between 3pm and 5pm. Mostly sunny, with a high near 82. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Widespread dense fog, mainly after 4am. Otherwise, partly cloudy, with a low around 67. South wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms between noon and 3pm, then a slight chance of showers after 3pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 59. Calm wind.
Sunday
Mostly sunny, with a high near 78. Calm wind.
Sunday Night
Mostly cloudy, with a low around 60. Calm wind becoming southeast around 5 mph.
Monday
A 20 percent chance of showers after noon. Partly sunny, with a high near 79. South wind 5 to 10 mph.
Monday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 66. South wind around 5 mph.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 78. Southwest wind around 5 mph.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 59. Southwest wind around 5 mph becoming calm.
Wednesday
A chance of showers. Partly sunny, with a high near 71. Calm wind becoming north around 5 mph in the morning.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50. North wind around 5 mph.
Thanksgiving Day
Mostly sunny, with a high near 62. North wind around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Old Jefferson LA
 30.36°N 91.02°W
Last Update:
11:32 am CST Nov 20, 2025
Forecast Valid:
5pm CST Nov 20, 2025-6pm CST Nov 27, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation