National Weather Service Forecast for: Anderson 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 97. Heat index values as high as 102. Calm wind becoming west southwest around 5 mph in the afternoon.
Hot

 Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73. Light west northwest wind.
Slight Chance
T-storms then
Partly Cloudy
 Friday

Friday: Showers and thunderstorms likely, mainly after 4pm. Increasing clouds, with a high near 93. Heat index values as high as 104. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth 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 before 2am. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms then
Chance
Showers
 Saturday

Saturday: Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Mostly Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 70.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 92.
Sunny

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

 Monday

Monday: Sunny, with a high near 90.
Sunny
Hi 97 °F Lo 73 °F Hi 93 °F Lo 70 °F Hi 92 °F Lo 70 °F Hi 92 °F Lo 68 °F Hi 90 °F

 

Today
 
 Mostly sunny and hot, with a high near 97. Heat index values as high as 102. Calm wind becoming west southwest around 5 mph in the afternoon.
Tonight
 
 A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73. Light west northwest wind.
Friday
 
 Showers and thunderstorms likely, mainly after 4pm. Increasing clouds, with a high near 93. Heat index values as high as 104. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 A 50 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. New rainfall amounts between a quarter and half of an inch possible.
Saturday
 
 Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
 
 Mostly clear, with a low around 70.
Sunday
 
 Sunny, with a high near 92.
Sunday Night
 
 Mostly clear, with a low around 68.
Monday
 
 Sunny, with a high near 90.
Monday Night
 
 Mostly clear, with a low around 69.
Tuesday
 
 Sunny, with a high near 91.
Tuesday Night
 
 Partly cloudy, with a low around 70.
Wednesday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

 

Forecast from NOAA-NWS for Anderson SC.