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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 6:11 pm CDT Aug 28, 2026
 
Tonight

Tonight: Mostly clear, with a low around 64. North northeast wind around 5 mph becoming calm.
Low: 64 °F
Saturday

Saturday: Sunny, with a high near 92. Calm wind becoming northeast around 5 mph.
High: 92 °F
Saturday
Night
Saturday Night: Mostly clear, with a low around 70. Calm wind becoming south around 5 mph after midnight.
Low: 70 °F
Sunday

Sunday: Sunny, with a high near 92. Heat index values as high as 97. South wind around 5 mph.
High: 92 °F
Sunday
Night
Sunday Night: Partly cloudy, with a low around 70. Calm wind becoming south southeast around 5 mph.
Low: 70 °F
Monday

Monday: Sunny, with a high near 93. South wind around 5 mph becoming calm  in the morning.
High: 93 °F
Monday
Night
Monday Night: Partly cloudy, with a low around 72. Calm wind.
Low: 72 °F
Tuesday

Tuesday: Sunny, with a high near 93. Calm wind.
High: 93 °F
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 73. Calm wind.
Low: 73 °F
Mostly Clear
Sunny
Mostly Clear
Sunny
Partly Cloudy
Sunny
Partly Cloudy
Sunny
Partly Cloudy

 

Tonight
 
Mostly clear, with a low around 64. North northeast wind around 5 mph becoming calm.
Saturday
 
Sunny, with a high near 92. Calm wind becoming northeast around 5 mph.
Saturday Night
 
Mostly clear, with a low around 70. Calm wind becoming south around 5 mph after midnight.
Sunday
 
Sunny, with a high near 92. Heat index values as high as 97. South wind around 5 mph.
Sunday Night
 
Partly cloudy, with a low around 70. Calm wind becoming south southeast around 5 mph.
Monday
 
Sunny, with a high near 93. South wind around 5 mph becoming calm in the morning.
Monday Night
 
Partly cloudy, with a low around 72. Calm wind.
Tuesday
 
Sunny, with a high near 93. Calm wind.
Tuesday Night
 
Partly cloudy, with a low around 73. Calm wind.
Wednesday
 
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94.
Wednesday Night
 
Partly cloudy, with a low around 73.
Thursday
 
Sunny, with a high near 94.
Thursday Night
 
Partly cloudy, with a low around 73.
Friday
 
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.

 

Forecast from NOAA-NWS for Watertown TN.