National Weather Service Forecast for: Apex NC
Issued by: National Weather Service Raleigh, NC
Updated: 2:27 am EDT Aug 20, 2026
 
Today

Today: Isolated showers and thunderstorms after 2pm. Increasing clouds, with a high near 96. Heat index values as high as 103. Calm wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 20%.
Sunny then
Isolated
T-storms
 Tonight

Tonight: Showers and thunderstorms likely before 2am, then scattered showers. Mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely

 Friday

Friday: A chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Mostly Sunny
then Chance
T-storms
 Friday
Night
Friday Night: Showers and thunderstorms likely before 7pm, then showers and possibly a thunderstorm between 7pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain

 Saturday

Saturday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Chance
T-storms
 Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 69. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Slight Chance
Showers
 Sunday

Sunday: Sunny, with a high near 89.
Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 67.
Mostly Clear

 Monday

Monday: Sunny, with a high near 88.
Sunny
Hi 96 °F Lo 72 °F Hi 90 °F Lo 70 °F Hi 87 °F Lo 69 °F Hi 89 °F Lo 67 °F Hi 88 °F

Hazardous Weather Outlook
Heat Advisory
 

Today
 
 Isolated showers and thunderstorms after 2pm. Increasing clouds, with a high near 96. Heat index values as high as 103. Calm wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 20%.
Tonight
 
 Showers and thunderstorms likely before 2am, then scattered showers. Mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
 
 A chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
 Showers and thunderstorms likely before 7pm, then showers and possibly a thunderstorm between 7pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday
 
 A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
 
 A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 69. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 Sunny, with a high near 89.
Sunday Night
 
 Mostly clear, with a low around 67.
Monday
 
 Sunny, with a high near 88.
Monday Night
 
 Mostly clear, with a low around 67.
Tuesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Tuesday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Wednesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Apex NC.