National Weather Service Forecast for: Picayune MS
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 1:57 pm CDT Jul 28, 2026
 
Tonight

Tonight: Mostly clear, with a low around 77. West wind around 5 mph becoming calm.
Mostly Clear

 Wednesday

Wednesday: Mostly sunny and hot, with a high near 98. Heat index values as high as 111. West wind around 5 mph.
Hot

 Wednesday
Night
Wednesday Night: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 77. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.
Mostly Cloudy
then Slight
Chance
T-storms
 Thursday

Thursday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 108. West wind around 5 mph. Chance of precipitation is 70%.
Slight Chance
T-storms then
T-storms
Likely
 Thursday
Night
Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 75. Calm wind. Chance of precipitation is 40%.
Chance
T-storms then
Chance
Showers
 Friday

Friday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 91. Calm wind becoming west around 5 mph. Chance of precipitation is 70%.
Slight Chance
T-storms then
T-storms
Likely
 Friday
Night
Friday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Calm wind becoming southwest around 5 mph.
Slight Chance
T-storms

 Saturday

Saturday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 88. West wind around 5 mph. Chance of precipitation is 60%.
Showers
Likely then
T-storms
Likely
 Saturday
Night
Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Southwest wind around 5 mph.
Chance
T-storms
Lo 77 °F Hi 98 °F Lo 77 °F Hi 92 °F Lo 75 °F Hi 91 °F Lo 74 °F Hi 88 °F Lo 73 °F

Heat Advisory
Heat Advisory
 

Tonight
 
 Mostly clear, with a low around 77. West wind around 5 mph becoming calm.
Wednesday
 
 Mostly sunny and hot, with a high near 98. Heat index values as high as 111. West wind around 5 mph.
Wednesday Night
 
 A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 77. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.
Thursday
 
 Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 108. West wind around 5 mph. Chance of precipitation is 70%.
Thursday Night
 
 A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 75. Calm wind. Chance of precipitation is 40%.
Friday
 
 Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 91. Calm wind becoming west around 5 mph. Chance of precipitation is 70%.
Friday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Calm wind becoming southwest around 5 mph.
Saturday
 
 Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 88. West wind around 5 mph. Chance of precipitation is 60%.
Saturday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Southwest wind around 5 mph.
Sunday
 
 Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 87. West wind 5 to 10 mph.
Sunday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm.
Monday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Calm wind.
Tuesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Picayune MS.