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

77°F

25°C

Humidity 99%
Wind Speed E 3 mph
Barometer 29.98 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 7 Sep 9:15 pm CDT
Extended Forecast for

Donaldsonville LA

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 77. Calm wind.

    Low: 77 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 108. Calm wind becoming southeast around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 93 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. East wind around 5 mph becoming calm.

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

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

    High: 90 °F

    Chance
    T-storms then
    T-storms

  • Wednesday Night

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

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 91 °F

    Chance
    Showers then
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 91 °F

    Chance
    Showers then
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 77. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 108. Calm wind becoming southeast around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. East wind around 5 mph becoming calm.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 90. East wind around 5 mph. Chance of precipitation is 80%.
Wednesday Night
Partly cloudy, with a low around 75. Calm wind.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 92. Calm wind becoming southeast around 5 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Donaldsonville LA
 30.11°N 91°W
Last Update:
2:01 pm CDT Sep 7, 2026
Forecast Valid:
9pm CDT Sep 7, 2026-6pm CDT Sep 14, 2026
 
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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