National Weather Service Forecast for: Fort Mill SC
Issued by: National Weather Service Greenville-Spartanburg, SC
Updated: 6:33 am EDT Jun 22, 2026
 
Today

Today: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 91. Southwest wind 5 to 15 mph, with gusts as high as 26 mph.
Mostly Sunny
then Chance
T-storms
 Tonight

Tonight: A 40 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 72. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms

 Tuesday

Tuesday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 89. West northwest wind 6 to 8 mph.
Mostly Sunny
then Slight
Chance
T-storms
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 66. North wind around 7 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 89. North northeast wind 5 to 7 mph becoming calm in the afternoon.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 69.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 90.
Mostly Sunny

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

 Friday

Friday: Mostly sunny, with a high near 92.
Mostly Sunny
Hi 91 °F Lo 72 °F Hi 89 °F Lo 66 °F Hi 89 °F Lo 69 °F Hi 90 °F Lo 71 °F Hi 92 °F

 

Today
 
 A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 91. Southwest wind 5 to 15 mph, with gusts as high as 26 mph.
Tonight
 
 A 40 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 72. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
 
 A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 89. West northwest wind 6 to 8 mph.
Tuesday Night
 
 Mostly clear, with a low around 66. North wind around 7 mph.
Wednesday
 
 Sunny, with a high near 89. North northeast wind 5 to 7 mph becoming calm in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 69.
Thursday
 
 Mostly sunny, with a high near 90.
Thursday Night
 
 Partly cloudy, with a low around 71.
Friday
 
 Mostly sunny, with a high near 92.
Friday Night
 
 Partly cloudy, with a low around 73.
Saturday
 
 Mostly sunny, with a high near 94.
Saturday Night
 
 Partly cloudy, with a low around 74.
Sunday
 
 Sunny and hot, with a high near 96.

 

Forecast from NOAA-NWS for Fort Mill SC.