National Weather Service Forecast for: Sulphur LA
Issued by: National Weather Service Lake Charles, LA
Updated: 10:20 pm CDT Aug 25, 2026
 
Tonight

Tonight: Mostly clear, with a low around 78. South wind around 5 mph becoming calm.
Mostly Clear

 Wednesday

Wednesday: Sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming west around 5 mph.
Hot

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 79. Southwest wind around 5 mph.
Mostly Clear

 Thursday

Thursday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 106. West wind around 5 mph. Chance of precipitation is 60%.
Chance
T-storms then
T-storms
Likely
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm. Chance of precipitation is 60%.
Showers
Likely

 Friday

Friday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Calm wind becoming north around 5 mph.
Chance
T-storms

 Friday
Night
Friday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 75. Calm wind.
Mostly Clear
then Slight
Chance
Showers
 Saturday

Saturday: Sunny, with a high near 95. Calm wind becoming northeast around 5 mph.
Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 75. Calm wind.
Mostly Clear
Lo 78 °F Hi 99 °F Lo 79 °F Hi 96 °F Lo 77 °F Hi 94 °F Lo 75 °F Hi 95 °F Lo 75 °F

Heat Advisory
 

Tonight
 
 Mostly clear, with a low around 78. South wind around 5 mph becoming calm.
Wednesday
 
 Sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming west around 5 mph.
Wednesday Night
 
 Mostly clear, with a low around 79. Southwest wind around 5 mph.
Thursday
 
 Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 106. West wind around 5 mph. Chance of precipitation is 60%.
Thursday Night
 
 Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm. Chance of precipitation is 60%.
Friday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Calm wind becoming north around 5 mph.
Friday Night
 
 A 20 percent chance of showers after 1am. Mostly clear, with a low around 75. Calm wind.
Saturday
 
 Sunny, with a high near 95. Calm wind becoming northeast around 5 mph.
Saturday Night
 
 Mostly clear, with a low around 75. Calm wind.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Sunday Night
 
 Mostly clear, with a low around 75.
Monday
 
 A 40 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Monday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 75.
Tuesday
 
 A 40 percent chance of showers and thunderstorms. Sunny, with a high near 93.

 

Forecast from NOAA-NWS for Sulphur LA.