National Weather Service Forecast for: Harvey LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 2:01 am CDT Jun 22, 2026
 
Today

Today: Mostly sunny, with a high near 91. Heat index values as high as 105. Southwest wind 5 to 10 mph.
Mostly Sunny

Tonight

Tonight: Partly cloudy, with a low around 79. Southwest wind 5 to 10 mph.
Partly Cloudy

Tuesday

Tuesday: Mostly sunny, with a high near 93. Heat index values as high as 106. West wind around 5 mph.
Mostly Sunny

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 78. Southwest wind around 5 mph.
Mostly Clear

Wednesday

Wednesday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 93. Northwest wind around 5 mph.
Mostly Sunny
then Slight
Chance
T-storms
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 78. Southwest wind around 5 mph.
Partly Cloudy

Thursday

Thursday: Mostly sunny, with a high near 92. West wind around 5 mph.
Mostly Sunny

Thursday
Night
Thursday Night: Mostly clear, with a low around 78. Southwest wind around 5 mph.
Mostly Clear

Friday

Friday: Sunny, with a high near 92. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Sunny

Hi 91 °F Lo 79 °F Hi 93 °F Lo 78 °F Hi 93 °F Lo 78 °F Hi 92 °F Lo 78 °F Hi 92 °F

Heat Advisory
 

Today
 
Mostly sunny, with a high near 91. Heat index values as high as 105. Southwest wind 5 to 10 mph.
Tonight
 
Partly cloudy, with a low around 79. Southwest wind 5 to 10 mph.
Tuesday
 
Mostly sunny, with a high near 93. Heat index values as high as 106. West wind around 5 mph.
Tuesday Night
 
Mostly clear, with a low around 78. Southwest wind around 5 mph.
Wednesday
 
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Northwest wind around 5 mph.
Wednesday Night
 
Partly cloudy, with a low around 78. Southwest wind around 5 mph.
Thursday
 
Mostly sunny, with a high near 92. West wind around 5 mph.
Thursday Night
 
Mostly clear, with a low around 78. Southwest wind around 5 mph.
Friday
 
Sunny, with a high near 92. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Friday Night
 
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Saturday
 
Sunny, with a high near 92. Light south wind increasing to 5 to 10 mph in the morning.
Saturday Night
 
Mostly clear, with a low around 80. South wind 5 to 10 mph.
Sunday
 
Sunny, with a high near 92. Light south wind increasing to 5 to 10 mph in the morning.

 

Forecast from NOAA-NWS for Harvey LA.