National Weather Service Forecast for: Clemson SC
Issued by: National Weather Service Greenville-Spartanburg, SC
Updated: 2:38 pm EDT Jul 28, 2026
 
This
Afternoon
This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny and hot, with a high near 96. Heat index values as high as 107. West wind around 11 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms
 Tonight

Tonight: A slight chance of showers and thunderstorms between 8pm and 11pm. Partly cloudy, with a low around 72. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Slight Chance
T-storms then
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 66. North northwest wind around 6 mph becoming calm in the evening.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 90. Calm wind.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 67.
Mostly Clear

 Friday

Friday: Sunny, with a high near 90.
Sunny

 Friday
Night
Friday Night: Partly cloudy, with a low around 71.
Partly Cloudy

 Saturday

Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87.
Partly Sunny
then Chance
T-storms
Hi 96 °F Lo 72 °F Hi 94 °F Lo 66 °F Hi 90 °F Lo 67 °F Hi 90 °F Lo 71 °F Hi 87 °F

 

This Afternoon
 
 A 30 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny and hot, with a high near 96. Heat index values as high as 107. West wind around 11 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A slight chance of showers and thunderstorms between 8pm and 11pm. Partly cloudy, with a low around 72. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Wednesday
 
 Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 66. North northwest wind around 6 mph becoming calm in the evening.
Thursday
 
 Sunny, with a high near 90. Calm wind.
Thursday Night
 
 Mostly clear, with a low around 67.
Friday
 
 Sunny, with a high near 90.
Friday Night
 
 Partly cloudy, with a low around 71.
Saturday
 
 A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87.
Saturday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
Sunday
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Sunday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.
Monday
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Monday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Clemson SC.