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National Weather Service Forecast for: Chattanooga, TN
Issued by: National Weather Service Morristown, TN

Updated: Thu, 03-Sep-2026 2:26pm EDT

Chattanooga, TN

This Afternoon Sunny	Friday Sunny	Saturday Sunny then Chance Showers And T-Storms	Sunday Sunny then Slight Chance Showers And T-Storms	Labor Day Mostly Sunny then Chance Showers And T-Storms	Tuesday Mostly Sunny	Wednesday Sunny
Hi 100 °F	Hi 99 °F	Hi 99 °F	Hi 97 °F	Hi 92 °F	Hi 92 °F	Hi 94 °F

Tonight Mostly Clear	Friday Night Mostly Clear	Saturday Night Chance Showers And T-Storms then Partly Cloudy	Sunday Night Slight Chance Showers And T-Storms	Monday Night Chance Showers And T-Storms then Partly Cloudy	Tuesday Night Partly Cloudy	Wednesday Night Partly Cloudy
Lo 76 °F	Lo 76 °F	Lo 74 °F	Lo 73 °F	Lo 70 °F	Lo 70 °F	Lo 71 °F

Heat Advisory issued September 3 at 1:04PM EDT until September 4 at 8:00PM EDT
Heat Advisory issued September 2 at 10:42PM EDT until September 4 at 8:00PM EDT

This Afternoon	Sunny, with a high near 100. Heat index values as high as 109. East wind around 0 mph.
Tonight	Mostly clear, with a low around 76. Heat index values as high as 106. East wind around 0 mph.
Friday	Sunny, with a high near 99. Heat index values as high as 109. Southeast wind around 0 mph.
Friday Night	Mostly clear, with a low around 76. Heat index values as high as 106. East wind around 0 mph.
Saturday	A chance of showers and thunderstorms after 2pm. Sunny, with a high near 99. North wind 0 to 5 mph. Chance of precipitation is 30%.
Saturday Night	A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. North wind 0 to 5 mph. Chance of precipitation is 30%.
Sunday	A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 97. North wind 0 to 5 mph. Chance of precipitation is 20%.
Sunday Night	A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Labor Day	A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Monday Night	A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Tuesday	Mostly sunny, with a high near 92.
Tuesday Night	Partly cloudy, with a low around 70.
Wednesday	Sunny, with a high near 94.
Wednesday Night	Partly cloudy, with a low around 71.

Forecast from NOAA-NWS for Chattanooga, TN.