National Weather Service Forecast for: Hattiesburg MS
Issued by: National Weather Service Jackson, MS
Updated: 5:15 pm CDT Jul 28, 2026
 
Tonight

Tonight: Mostly clear, with a low around 79. West wind around 5 mph becoming calm.
Mostly Clear

 Wednesday

Wednesday: Mostly sunny and hot, with a high near 100. Heat index values as high as 110. West northwest wind around 5 mph.
Hot

 Wednesday
Night
Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, then gradually becoming mostly clear, with a low around 78. West wind around 5 mph becoming calm.
Slight Chance
T-storms then
Chance
Showers
 Thursday

Thursday: Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming west northwest around 5 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Showers
Likely 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. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.
Chance
T-storms then
Chance
Showers
 Friday

Friday: Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny
then T-storms
Likely
 Friday
Night
Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Calm wind becoming southwest around 5 mph after midnight.
Chance
T-storms

 Saturday

Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. West southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Showers
Likely

 Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South southwest wind around 5 mph. Chance of precipitation is 60%.
Showers
Likely
Lo 79 °F Hi 100 °F Lo 78 °F Hi 94 °F Lo 75 °F Hi 93 °F Lo 75 °F Hi 90 °F Lo 74 °F

Heat Advisory
Heat Advisory
 

Tonight
 
 Mostly clear, with a low around 79. West wind around 5 mph becoming calm.
Wednesday
 
 Mostly sunny and hot, with a high near 100. Heat index values as high as 110. West northwest wind around 5 mph.
Wednesday Night
 
 A 40 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, then gradually becoming mostly clear, with a low around 78. West wind around 5 mph becoming calm.
Thursday
 
 Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming west northwest around 5 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
 
 A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.
Friday
 
 Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Calm wind becoming southwest around 5 mph after midnight.
Saturday
 
 Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. West southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South southwest wind around 5 mph. Chance of precipitation is 60%.
Sunday
 
 Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Monday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Tuesday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.

 

Forecast from NOAA-NWS for Hattiesburg MS.