National Weather Service Forecast for: Opelousas 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 75. Calm wind.
Mostly Clear

 Wednesday

Wednesday: Sunny and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming west around 5 mph.
Hot

 Wednesday
Night
Wednesday Night: A slight chance of showers between 2am and 5am. Mostly clear, with a low around 77. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.
Mostly Clear
then Slight
Chance
Showers
 Thursday

Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 95. Heat index values as high as 106. Southwest wind around 5 mph. Chance of precipitation is 80%.
Chance
T-storms then
T-storms
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 75. Calm wind. Chance of precipitation is 70%.
Showers
Likely

 Friday

Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming north around 5 mph.
Chance
T-storms

 Friday
Night
Friday Night: Mostly clear, with a low around 73. Calm wind.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 94. Calm wind becoming northeast around 5 mph.
Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 73. Calm wind.
Mostly Clear
Lo 75 °F Hi 99 °F Lo 77 °F Hi 95 °F Lo 75 °F Hi 93 °F Lo 73 °F Hi 94 °F Lo 73 °F

Heat Advisory
 

Tonight
 
 Mostly clear, with a low around 75. Calm wind.
Wednesday
 
 Sunny and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming west around 5 mph.
Wednesday Night
 
 A slight chance of showers between 2am and 5am. Mostly clear, with a low around 77. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.
Thursday
 
 A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 95. Heat index values as high as 106. Southwest wind around 5 mph. Chance of precipitation is 80%.
Thursday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 75. Calm wind. Chance of precipitation is 70%.
Friday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming north around 5 mph.
Friday Night
 
 Mostly clear, with a low around 73. Calm wind.
Saturday
 
 Sunny, with a high near 94. Calm wind becoming northeast around 5 mph.
Saturday Night
 
 Mostly clear, with a low around 73. Calm wind.
Sunday
 
 A 30 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 94.
Sunday Night
 
 Mostly clear, with a low around 73.
Monday
 
 A 40 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Monday Night
 
 Mostly clear, with a low around 74.
Tuesday
 
 A 40 percent chance of showers and thunderstorms. Sunny, with a high near 94.

 

Forecast from NOAA-NWS for Opelousas LA.