National Weather Service Forecast for: Newnan GA
Issued by: National Weather Service Peachtree City, GA
Updated: 2:26 am EDT Aug 20, 2026
 
Today

Today: A 10 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 96. Heat index values as high as 104. Calm wind.
Mostly Sunny
then Slight
Chance
T-storms
 Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 72. Calm wind.
Chance
T-storms then
Chance
Showers
 Friday

Friday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 101. Calm wind becoming west around 5 mph in the afternoon.
Partly Sunny
then Chance
T-storms
 Friday
Night
Friday 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 70. Calm wind. Chance of precipitation is 30%.
Chance
T-storms then
Slight Chance
Showers
 Saturday

Saturday: Sunny, with a high near 92. Calm wind becoming northwest around 5 mph in the afternoon.
Sunny

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

 Sunday

Sunday: Sunny, with a high near 91.
Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 68.
Mostly Clear

 Monday

Monday: Sunny, with a high near 90.
Sunny
Hi 96 °F Lo 72 °F Hi 92 °F Lo 70 °F Hi 92 °F Lo 69 °F Hi 91 °F Lo 68 °F Hi 90 °F

 

Today
 
 A 10 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 96. Heat index values as high as 104. Calm wind.
Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 72. Calm wind.
Friday
 
 A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 101. Calm wind becoming west around 5 mph in the afternoon.
Friday 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 70. Calm wind. Chance of precipitation is 30%.
Saturday
 
 Sunny, with a high near 92. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
 
 Mostly clear, with a low around 69.
Sunday
 
 Sunny, with a high near 91.
Sunday Night
 
 Mostly clear, with a low around 68.
Monday
 
 Sunny, with a high near 90.
Monday Night
 
 Partly cloudy, with a low around 68.
Tuesday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Wednesday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

 

Forecast from NOAA-NWS for Newnan GA.