National Weather Service Forecast for: Spartanburg SC
Issued by: National Weather Service Greenville-Spartanburg, SC
Updated: 9:30 pm EDT Jun 18, 2026
 
Tonight

Tonight: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Patchy fog after midnight. Low around 69. West southwest wind around 7 mph becoming east southeast after midnight. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain
and Patchy
Fog
 Juneteenth

Juneteenth: A chance of showers before 1pm, then a chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. Cloudy, then gradually becoming mostly sunny, with a high near 87. West northwest wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts between a half and three quarters of an inch possible.
Heavy Rain
then Chance
T-storms
 Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 63. North northwest wind around 5 mph becoming calm after midnight. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Partly Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 85. Light and variable wind.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 65. Calm wind.
Partly Cloudy

 Sunday

Sunday: Sunny, with a high near 88.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 70.
Partly Cloudy

 Monday

Monday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Chance
Showers then
Chance
T-storms
 Monday
Night
Monday Night: A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70.
Chance
T-storms
Lo 69 °F Hi 87 °F Lo 63 °F Hi 85 °F Lo 65 °F Hi 88 °F Lo 70 °F Hi 87 °F Lo 70 °F

 

Tonight
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Patchy fog after midnight. Low around 69. West southwest wind around 7 mph becoming east southeast after midnight. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Juneteenth
 
 A chance of showers before 1pm, then a chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. Cloudy, then gradually becoming mostly sunny, with a high near 87. West northwest wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
 
 A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 63. North northwest wind around 5 mph becoming calm after midnight. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Mostly sunny, with a high near 85. Light and variable wind.
Saturday Night
 
 Partly cloudy, with a low around 65. Calm wind.
Sunday
 
 Sunny, with a high near 88.
Sunday Night
 
 Partly cloudy, with a low around 70.
Monday
 
 A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Monday Night
 
 A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70.
Tuesday
 
 A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Wednesday
 
 Mostly sunny, with a high near 85.
Wednesday Night
 
 Partly cloudy, with a low around 66.
Thursday
 
 Mostly sunny, with a high near 87.

 

Forecast from NOAA-NWS for Spartanburg SC.