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.

Overcast

77°F

25°C

Humidity 79%
Wind Speed S 6 mph
Barometer 29.89 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 May 12:15 am CDT
Extended Forecast for

Donaldsonville LA

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 74. Calm wind. New rainfall amounts between a quarter and half of an inch possible.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 82. Light south wind becoming southwest 5 to 10 mph in the morning. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 4am, then a chance of showers after 5am. Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 84 °F

    Showers
    Likely then
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 81. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 100%.

    High: 81 °F

    Showers then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 71. Calm wind. Chance of precipitation is 80%.

    Low: 71 °F

    Showers

  • Memorial Day

    Memorial Day: Showers and possibly a thunderstorm. High near 81. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 90%.

    High: 81 °F

    Showers then
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 74. Calm wind. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 82. Light south wind becoming southwest 5 to 10 mph in the morning. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A slight chance of showers and thunderstorms before 4am, then a chance of showers after 5am. Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Calm wind.
Sunday
Showers and possibly a thunderstorm. High near 81. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 100%.
Sunday Night
Showers and possibly a thunderstorm. Low around 71. Calm wind. Chance of precipitation is 80%.
Memorial Day
Showers and possibly a thunderstorm. High near 81. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 90%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm.
Tuesday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Showers and thunderstorms. Partly sunny, with a high near 84. Calm wind becoming southeast around 5 mph in the morning.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind around 5 mph becoming calm.
Thursday
Showers and thunderstorms. Mostly cloudy, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Donaldsonville LA
 30.08°N 91°W
Last Update:
12:09 am CDT May 22, 2026
Forecast Valid:
12am CDT May 22, 2026-6pm CDT May 28, 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