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.

Fair

85°F

29°C

Humidity 78%
Wind Speed SW 6 mph
Barometer 29.98 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 27 Aug 2:35 pm CDT
Extended Forecast for

Donaldsonville LA

  • This Afternoon

    This Afternoon: Showers and thunderstorms, mainly before 3pm. High near 87. West wind around 5 mph becoming south. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly between 7pm and 5am. Mostly cloudy, with a low around 74. Calm wind. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 91. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 74. Calm wind.

    Low: 74 °F

    Gradual
    Clearing

  • Saturday

    Saturday: Sunny, with a high near 94. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Saturday Night

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

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 1pm. Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 94 °F

    T-storms
    Likely

Detailed Forecast

This Afternoon
Showers and thunderstorms, mainly before 3pm. High near 87. West wind around 5 mph becoming south. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 50 percent chance of showers and thunderstorms, mainly between 7pm and 5am. Mostly cloudy, with a low around 74. Calm wind. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 91. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%.
Friday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 74. Calm wind.
Saturday
Sunny, with a high near 94. Calm wind becoming northeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 75. Calm wind.
Sunday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 75. Calm wind.
Monday
Showers and thunderstorms likely, mainly after 1pm. Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 75. Calm wind.
Tuesday
Showers and thunderstorms likely. Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 75. Calm wind.
Wednesday
A chance of showers and thunderstorms. Sunny and hot, with a high near 95. Calm wind becoming east around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Donaldsonville LA
 30.11°N 91°W
Last Update:
2:07 pm CDT Aug 27, 2026
Forecast Valid:
2pm CDT Aug 27, 2026-6pm CDT Sep 2, 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