National Weather Service Forecast for: Kennesaw GA
Issued by: National Weather Service Peachtree City, GA
Updated: 2:26 am EDT Jul 18, 2026
 
Today

Today: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 90. Heat index values as high as 100. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Slight Chance
T-storms

 Tonight

Tonight: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly clear, with a low around 73. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Slight Chance
T-storms then
Mostly Clear
 Sunday

Sunday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 100. Northwest wind around 5 mph.
Sunny then
Chance
T-storms
 Sunday
Night
Sunday 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 73. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Chance
T-storms then
Slight Chance
Showers
 Monday

Monday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny then
Slight Chance
T-storms
 Monday
Night
Monday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74.
Slight Chance
T-storms then
Partly Cloudy
 Tuesday

Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Mostly Sunny
then Slight
Chance
T-storms
 Tuesday
Night
Tuesday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75.
Slight Chance
T-storms then
Partly Cloudy
 Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91.
Chance
T-storms
Hi 90 °F Lo 73 °F Hi 91 °F Lo 73 °F Hi 91 °F Lo 74 °F Hi 91 °F Lo 75 °F Hi 91 °F

Hazardous Weather Outlook
 

Today
 
 A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 90. Heat index values as high as 100. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
 
 A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly clear, with a low around 73. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
 
 A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 100. Northwest wind around 5 mph.
Sunday 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 73. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
 A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74.
Tuesday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Tuesday Night
 
 A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75.
Wednesday
 
 A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 69.
Thursday
 
 A 20 percent chance of showers. Sunny, with a high near 88.
Thursday Night
 
 A 10 percent chance of showers. Partly cloudy, with a low around 70.
Friday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

 

Forecast from NOAA-NWS for Kennesaw GA.