National Weather Service Forecast for: Gallatin TN
Issued by: National Weather Service Nashville, TN
Updated: 2:31 am CDT Jun 30, 2026
 
Overnight

Overnight: Clear, with a low around 76. Calm wind.
Clear

Tuesday

Tuesday: Sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind.
Hot

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 76. Calm wind.
Mostly Clear

Wednesday

Wednesday: Sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming southeast around 5 mph.
Hot

Wednesday
Night
Wednesday Night: Mostly clear, with a low around 77. Calm wind.
Mostly Clear

Thursday

Thursday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 99. Calm wind becoming east northeast around 5 mph.
Sunny then
Chance
T-storms
Thursday
Night
Thursday Night: A 30 percent chance of showers and thunderstorms before 1am.  Mostly clear, with a low around 76. Northeast wind around 5 mph becoming calm.
Chance
T-storms
Friday

Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 98. Calm wind becoming northeast around 5 mph.
Sunny then
Chance
T-storms
Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 75. Calm wind.
Chance
T-storms
Lo 76 °F Hi 98 °F Lo 76 °F Hi 99 °F Lo 77 °F Hi 99 °F Lo 76 °F Hi 98 °F Lo 75 °F

Extreme Heat Warning
 

Overnight
 
Clear, with a low around 76. Calm wind.
Tuesday
 
Sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind.
Tuesday Night
 
Mostly clear, with a low around 76. Calm wind.
Wednesday
 
Sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming southeast around 5 mph.
Wednesday Night
 
Mostly clear, with a low around 77. Calm wind.
Thursday
 
A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 99. Calm wind becoming east northeast around 5 mph.
Thursday Night
 
A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. Northeast wind around 5 mph becoming calm.
Friday
 
A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 98. Calm wind becoming northeast around 5 mph.
Friday Night
 
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.
Independence Day
 
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 95.
Saturday Night
 
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Sunday
 
Showers and thunderstorms likely. Mostly sunny, with a high near 93. Chance of precipitation is 60%.
Sunday Night
 
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Monday
 
Showers and thunderstorms likely. Mostly sunny, with a high near 93. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Gallatin TN.