National Weather Service Forecast for: Newnan GA
Issued by: National Weather Service Peachtree City, GA
Updated: 10:47 pm EDT Jun 18, 2026
 
Tonight

Tonight: Showers and thunderstorms before 5am, then a slight chance of showers. Some of the storms could produce heavy rainfall. Low around 70. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Heavy Rain

 Juneteenth

Juneteenth: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 85. West wind 5 to 10 mph, with gusts as high as 15 mph.
Chance
T-storms

 Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. Calm wind.
Chance
T-storms then
Mostly Cloudy
 Saturday

Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 85. Calm wind. Chance of precipitation is 30%.
Chance
T-storms

 Saturday
Night
Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68. Calm wind.
Chance
T-storms then
Mostly Cloudy
 Sunday

Sunday: A chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Chance
Showers then
T-storms
Likely
 Sunday
Night
Sunday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
T-storms
Likely

 Monday

Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 88.
Chance
T-storms

 Monday
Night
Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 50%.
Chance
T-storms
Lo 70 °F Hi 85 °F Lo 66 °F Hi 85 °F Lo 68 °F Hi 86 °F Lo 71 °F Hi 88 °F Lo 71 °F

Flood Watch
Hazardous Weather Outlook
Wind Advisory
 

Tonight
 
 Showers and thunderstorms before 5am, then a slight chance of showers. Some of the storms could produce heavy rainfall. Low around 70. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Juneteenth
 
 A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 85. West wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
 
 A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. Calm wind.
Saturday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 85. Calm wind. Chance of precipitation is 30%.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68. Calm wind.
Sunday
 
 A chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Sunday Night
 
 Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
 
 A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 88.
Monday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 50%.
Tuesday
 
 A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Wednesday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Newnan GA.