Donaldsonville, LA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Donaldsonville, LA in one place.
Mostly sunny. High near 97, with temperatures falling to around 95 in the afternoon. Heat index values as high as 105. Northwest wind 0 to 5 mph.
Local Weather Overview
This forecast page for Donaldsonville, LA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 17, 2026 9:58 AM CDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Donaldsonville, LA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 9:58 AM CDT
- Forecast office
- LIX
- Source
- NOAA / NWS
Daily Outlook
This Week in Donaldsonville
Monday looks like the warmest upcoming period in Donaldsonville at 100 degrees F.
Saturday Night is the coolest period ahead with temperatures near 75 degrees F.
The strongest winds are forecast for Today at about 0 to 5 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 9:58 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LIX
- Radar station
- KLIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 76. West wind 0 to 5 mph.
Mostly sunny. High near 97, with temperatures falling to around 95 in the afternoon. Heat index values as high as 107. Northwest wind around 5 mph.
Mostly clear, with a low around 75. Heat index values as high as 107. West wind around 5 mph.
Sunny, with a high near 99. Northwest wind around 5 mph.
Mostly clear, with a low around 76. West wind around 5 mph.
Sunny, with a high near 100. Northwest wind around 5 mph.
Mostly clear, with a low around 77. West wind 0 to 5 mph.
Sunny, with a high near 100. Northwest wind around 5 mph.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 78. West wind 0 to 5 mph.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 100. Northwest wind around 5 mph.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 78. West wind around 5 mph.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Sunny, with a high near 99. Northwest wind around 5 mph.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 77. North wind 0 to 5 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 17
|
Mostly Sunny
|
97°F |
0 to 5 mph
NW
|
|
Tonight
Jul 17
|
Partly Cloudy
|
76°F |
0 to 5 mph
W
|
|
Saturday
Jul 18
|
Mostly Sunny
|
97°F |
5 mph
NW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
75°F |
5 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
99°F |
5 mph
NW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
76°F |
5 mph
W
|
|
Monday
Jul 20
|
Sunny
|
100°F |
5 mph
NW
|
|
Monday Night
Jul 20
|
Mostly Clear
|
77°F |
0 to 5 mph
W
|
|
Tuesday
Jul 21
|
Sunny
|
100°F |
5 mph
NW
|
|
Tuesday Night
Jul 21
|
Slight Chance Showers And Thunderstorms
|
78°F |
0 to 5 mph
W
|
|
Wednesday
Jul 22
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
100°F |
5 mph
NW
|
|
Wednesday Night
Jul 22
|
Slight Chance Showers And Thunderstorms
|
78°F |
5 mph
W
|
|
Thursday
Jul 23
|
Chance Showers And Thunderstorms
|
99°F |
5 mph
NW
|
|
Thursday Night
Jul 23
|
Chance Showers And Thunderstorms then Partly Cloudy
|
77°F |
0 to 5 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Donaldsonville.
