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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 9:12 am CDT Jun 27, 2026
 
Today

Today: Showers and thunderstorms.  High near 86. Southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
High: 86 °F
Tonight

Tonight: Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a low around 71. South southwest wind around 5 mph.  Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Low: 71 °F
Sunday

Sunday: A chance of showers before 7am, then a slight chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 92. Heat index values as high as 102. West southwest wind 5 to 10 mph.  Chance of precipitation is 30%.
High: 92 °F
Sunday
Night
Sunday Night: Mostly clear, with a low around 74. Calm wind.
Low: 74 °F
Monday

Monday: Sunny, with a high near 94. Calm wind becoming west around 5 mph.
High: 94 °F
Monday
Night
Monday Night: Mostly clear, with a low around 75. Calm wind.
Low: 75 °F
Tuesday

Tuesday: Sunny, with a high near 96. Calm wind becoming north northeast around 5 mph.
High: 96 °F
Tuesday
Night
Tuesday Night: Clear, with a low around 76. Calm wind.
Low: 76 °F
Wednesday

Wednesday: Sunny, with a high near 95. Calm wind becoming east southeast around 5 mph.
High: 95 °F
Chance
T-storms then
T-storms
Heavy Rain

Chance
Showers then
Slight Chance
T-storms
Mostly Clear

Sunny

Mostly Clear

Sunny

Clear

Sunny

Flood Watch
 

Today
 
Showers and thunderstorms. High near 86. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 71. South southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Sunday
 
A chance of showers before 7am, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 102. West southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Sunday Night
 
Mostly clear, with a low around 74. Calm wind.
Monday
 
Sunny, with a high near 94. Calm wind becoming west around 5 mph.
Monday Night
 
Mostly clear, with a low around 75. Calm wind.
Tuesday
 
Sunny, with a high near 96. Calm wind becoming north northeast around 5 mph.
Tuesday Night
 
Clear, with a low around 76. Calm wind.
Wednesday
 
Sunny, with a high near 95. Calm wind becoming east southeast around 5 mph.
Wednesday Night
 
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 75.
Thursday
 
Sunny, with a high near 95.
Thursday Night
 
Mostly clear, with a low around 76.
Friday
 
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.

 

Forecast from NOAA-NWS for Watertown TN.