Grand Coteau, LA Weather Forecast
Local 7-day forecast
Partly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Coteau, LA in one place.
A chance of showers and thunderstorms between 2pm and 4pm. Partly sunny, with a high near 88. Heat index values as high as 98. Southwest wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Grand Coteau, 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 14, 2026 9:22 PM CDT.
The active forecast window currently covers Jul 15 to Jul 21, 2026 for Grand Coteau, LA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 21, 2026
- Latest sync
- Jul 14, 2026 9:22 PM CDT
- Forecast office
- LCH
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Coteau
Tuesday looks like the warmest upcoming period in Grand Coteau at 94 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 73 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 9:22 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LCH
- Radar station
- KLCH
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 73. West wind around 0 mph. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 91. Heat index values as high as 105. Southwest wind around 0 mph.
Partly cloudy, with a low around 74. South wind around 0 mph.
Mostly sunny, with a high near 92. Southwest wind around 0 mph.
Partly cloudy, with a low around 74. Southwest wind around 0 mph.
Sunny, with a high near 92. West wind around 0 mph.
Mostly clear, with a low around 75. West wind 0 to 5 mph.
Sunny, with a high near 93.
Mostly clear, with a low around 75.
Sunny, with a high near 93.
Mostly clear, with a low around 76.
Sunny, with a high near 94.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Partly Sunny then Chance Showers And Thunderstorms
|
88°F |
0 to 5 mph
SW
|
|
Wednesday Night
Jul 15
|
Partly Cloudy
|
73°F |
0 mph
|
|
Thursday
Jul 16
|
Mostly Sunny
|
91°F |
0 mph
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
74°F |
0 mph
|
|
Friday
Jul 17
|
Mostly Sunny
|
92°F |
0 mph
|
|
Friday Night
Jul 17
|
Partly Cloudy
|
74°F |
0 mph
|
|
Saturday
Jul 18
|
Sunny
|
92°F |
0 mph
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
75°F |
0 to 5 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
93°F |
5 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
75°F |
0 to 5 mph
SW
|
|
Monday
Jul 20
|
Sunny
|
93°F |
5 mph
W
|
|
Monday Night
Jul 20
|
Mostly Clear
|
76°F |
5 mph
SW
|
|
Tuesday
Jul 21
|
Sunny
|
94°F |
5 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Coteau.
