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

62°F

17°C

Humidity 63%
Wind Speed SE 7 mph
Barometer 30.28 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 21 Jan 9:15 am CST
Extended Forecast for

Donaldsonville LA

  • Today

    Today: A chance of sprinkles with a slight chance of showers before 4pm, then a chance of sprinkles between 4pm and 5pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 70. South wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 70 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A chance of showers or sprinkles before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers after noon. Partly sunny, with a high near 75. Calm wind becoming south around 5 mph.

    High: 75 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 71. Calm wind becoming east around 5 mph in the morning.

    High: 71 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Cloudy, with a low around 47. Northeast wind around 5 mph.

    Low: 47 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly after noon. Cloudy, with a high near 55. Northeast wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 55 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers. Low around 31. North wind around 10 mph. Chance of precipitation is 90%.

    Low: 31 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before noon. Mostly cloudy, with a high near 39. North wind around 10 mph, with gusts as high as 20 mph.

    High: 39 °F

    Showers
    Likely

Detailed Forecast

Today
A chance of sprinkles with a slight chance of showers before 4pm, then a chance of sprinkles between 4pm and 5pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 70. South wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
A chance of showers or sprinkles before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers after noon. Partly sunny, with a high near 75. Calm wind becoming south around 5 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57. Calm wind.
Friday
A 40 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 71. Calm wind becoming east around 5 mph in the morning.
Friday Night
A 40 percent chance of showers. Cloudy, with a low around 47. Northeast wind around 5 mph.
Saturday
Showers likely, mainly after noon. Cloudy, with a high near 55. Northeast wind 5 to 10 mph. Chance of precipitation is 70%.
Saturday Night
Showers. Low around 31. North wind around 10 mph. Chance of precipitation is 90%.
Sunday
Showers likely, mainly before noon. Mostly cloudy, with a high near 39. North wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
A slight chance of rain showers before midnight, then a chance of flurries. Mostly cloudy, with a low around 24. North wind around 10 mph.
Monday
Mostly sunny, with a high near 42. North wind 5 to 10 mph.
Monday Night
Widespread frost. Otherwise, mostly clear, with a low around 23. North wind around 5 mph.
Tuesday
Widespread frost. Otherwise, sunny, with a high near 49. Northeast wind around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Donaldsonville LA
 30.11°N 91°W
Last Update:
5:19 am CST Jan 21, 2026
Forecast Valid:
9am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation