National Weather Service Forecast for: Cornelius NC
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 west southwest around 6 mph in the afternoon.
Hot

 Tonight

Tonight: A chance of showers and thunderstorms before 5am, then a slight chance of showers. Mostly cloudy, with a low around 71. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Chance
Showers
 Friday

Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5pm. High near 90. Heat index values as high as 102. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Slight Chance
T-storms then
T-storms
 Friday
Night
Friday Night: Showers and thunderstorms before midnight, then showers likely between midnight and 2am. Low around 68. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
T-storms then
Showers
Likely
 Saturday

Saturday: A slight chance of showers between 10am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind. Chance of precipitation is 20%.
Slight Chance
Showers 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 89.
Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 66.
Mostly Clear

 Monday

Monday: Sunny, with a high near 87.
Sunny
Hi 96 °F Lo 71 °F Hi 90 °F Lo 68 °F Hi 88 °F Lo 69 °F Hi 89 °F Lo 66 °F Hi 87 °F

 

Today
 
 Mostly sunny and hot, with a high near 96. Heat index values as high as 102. Calm wind becoming west southwest around 6 mph in the afternoon.
Tonight
 
 A chance of showers and thunderstorms before 5am, then a slight chance of showers. Mostly cloudy, with a low around 71. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5pm. High near 90. Heat index values as high as 102. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
 Showers and thunderstorms before midnight, then showers likely between midnight and 2am. Low around 68. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
 
 A slight chance of showers between 10am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind. Chance of precipitation is 20%.
Saturday Night
 
 Mostly clear, with a low around 69.
Sunday
 
 Sunny, with a high near 89.
Sunday Night
 
 Mostly clear, with a low around 66.
Monday
 
 Sunny, with a high near 87.
Monday Night
 
 Mostly clear, with a low around 66.
Tuesday
 
 Sunny, with a high near 88.
Tuesday Night
 
 Partly cloudy, with a low around 68.
Wednesday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

 

Forecast from NOAA-NWS for Cornelius NC.