National Weather Service Forecast for: Rock Hill SC
Issued by: National Weather Service Greenville-Spartanburg, SC
Updated: 2:23 am EDT Aug 20, 2026
 
Today

Today: Mostly sunny and hot, with a high near 96. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon.
Hot

 Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 72. Light and variable wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms

 Friday

Friday: Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 93. Heat index values as high as 104. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Slight Chance
Showers then
T-storms
Likely
 Friday
Night
Friday Night: Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 2am. Some of the storms could produce heavy rainfall. Low around 69. Light south southeast wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Heavy Rain
then Showers
Likely
 Saturday

Saturday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 89. Light west wind.
Partly Sunny
then Slight
Chance
T-storms
 Saturday
Night
Saturday Night: Mostly clear, with a low around 69.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 90.
Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 68.
Mostly Clear

 Monday

Monday: Sunny, with a high near 89.
Sunny
Hi 96 °F Lo 72 °F Hi 93 °F Lo 69 °F Hi 89 °F Lo 69 °F Hi 90 °F Lo 68 °F Hi 89 °F

 

Today
 
 Mostly sunny and hot, with a high near 96. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 72. Light and variable wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
 
 Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 93. Heat index values as high as 104. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
 Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 2am. Some of the storms could produce heavy rainfall. Low around 69. Light south southeast wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
 
 A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 89. Light west wind.
Saturday Night
 
 Mostly clear, with a low around 69.
Sunday
 
 Sunny, with a high near 90.
Sunday Night
 
 Mostly clear, with a low around 68.
Monday
 
 Sunny, with a high near 89.
Monday Night
 
 Mostly clear, with a low around 67.
Tuesday
 
 Mostly sunny, with a high near 90.
Tuesday Night
 
 Partly cloudy, with a low around 68.
Wednesday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Rock Hill SC.