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

93°F

34°C

Humidity 60%
Wind Speed SW 9 mph
Barometer 30.03 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 24 Aug 11:55 am CDT
Extended Forecast for

Old Jefferson LA

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly after 4pm. Increasing clouds and hot, with a high near 95. Heat index values as high as 106. West wind around 5 mph becoming north. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 95 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 77. Calm wind. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 77 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 3pm. Mostly sunny, with a high near 91. Heat index values as high as 106. Calm wind becoming north around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Showers and thunderstorms likely after 1pm. Sunny, with a high near 93. Calm wind becoming southwest around 5 mph. Chance of precipitation is 60%.

    High: 93 °F

    Sunny then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 76. Calm wind. Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 90. Calm wind becoming southwest around 5 mph. Chance of precipitation is 80%.

    High: 90 °F

    Chance
    T-storms then
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    T-storms
    Likely

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 4pm. Increasing clouds and hot, with a high near 95. Heat index values as high as 106. West wind around 5 mph becoming north. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 50 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 77. Calm wind. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly before 3pm. Mostly sunny, with a high near 91. Heat index values as high as 106. Calm wind becoming north around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly clear, with a low around 76. Calm wind.
Wednesday
Showers and thunderstorms likely after 1pm. Sunny, with a high near 93. Calm wind becoming southwest around 5 mph. Chance of precipitation is 60%.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 76. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 90. Calm wind becoming southwest around 5 mph. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Friday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind.
Friday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind.
Saturday Night
Partly cloudy, with a low around 75. Calm wind.
Sunday
A chance of showers and thunderstorms. Sunny, with a high near 90. Calm wind becoming southeast around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Old Jefferson LA
 30.36°N 91.02°W
Last Update:
5:31 am CDT Aug 24, 2026
Forecast Valid:
12pm CDT Aug 24, 2026-6pm CDT Aug 30, 2026
 
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