NWS Forecast for Simpsonville SC

National Weather Service Forecast for: Simpsonville SC
Issued by: National Weather Service Greenville-Spartanburg, SC

Updated: 3:33 am EDT Jun 23, 2025

Today Hot	Tonight Clear	Tuesday Hot	Tuesday Night Partly Cloudy	Wednesday Mostly Sunny then Chance T-storms	Wednesday Night Chance T-storms	Thursday Mostly Sunny	Thursday Night Chance T-storms then Partly Cloudy	Friday Mostly Sunny then Chance T-storms
Hi 96 °F	Lo 74 °F	Hi 98 °F	Lo 75 °F	Hi 96 °F	Lo 71 °F	Hi 92 °F	Lo 71 °F	Hi 90 °F

Hazardous Weather Outlook

Today	Sunny and hot, with a high near 96. Calm wind.
Tonight	Clear, with a low around 74. Light and variable wind.
Tuesday	Sunny and hot, with a high near 98. Heat index values as high as 103. Light and variable wind becoming north northeast around 5 mph in the morning.
Tuesday Night	Partly cloudy, with a low around 75. Light north wind.
Wednesday	A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 96. Light and variable wind becoming north northeast around 5 mph in the morning.
Wednesday Night	A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Thursday	Mostly sunny, with a high near 92.
Thursday Night	A 30 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 71.
Friday	A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 90.
Friday Night	A 30 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 72.
Saturday	A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Saturday Night	A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday	A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

Forecast from NOAA-NWS for Simpsonville SC.