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

Tonight: Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms, mainly between 3am and 5am. Some of the storms could produce heavy rainfall. Low around 70. Southwest wind around 15 mph, with gusts as high as 35 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 between 3pm and 5pm. Partly sunny, with a high near 85. West wind around 10 mph, with gusts as high as 20 mph.
Slight Chance
Showers then
Chance
T-storms
 Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm in the evening.
Chance
T-storms then
Mostly Cloudy
 Saturday

Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Calm wind.
Partly Sunny
then Slight
Chance
T-storms
 Saturday
Night
Saturday Night: A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68. Calm wind.
Slight Chance
T-storms then
Mostly Cloudy
 Sunday

Sunday: A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Slight Chance
T-storms then
T-storms
Likely
 Sunday
Night
Sunday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Showers
Likely then
Chance
T-storms
 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 86 °F Lo 68 °F Hi 87 °F Lo 70 °F Hi 88 °F Lo 71 °F

Hazardous Weather Outlook
Wind Advisory
Flood Watch
 

Tonight
 
 Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms, mainly between 3am and 5am. Some of the storms could produce heavy rainfall. Low around 70. Southwest wind around 15 mph, with gusts as high as 35 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 between 3pm and 5pm. Partly sunny, with a high near 85. West wind around 10 mph, with gusts as high as 20 mph.
Friday Night
 
 A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm in the evening.
Saturday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Calm wind.
Saturday Night
 
 A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68. Calm wind.
Sunday
 
 A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 87. Chance of precipitation is 60%.
Sunday Night
 
 Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 70. 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 40%.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Wednesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

 

Forecast from NOAA-NWS for McDonough GA.