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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 pm CDT Oct 20, 2026
 
Tonight

Tonight: Clear, with a low around 42. North northeast wind around 5 mph becoming calm  in the evening.
Low: 42 °F
Wednesday

Wednesday: Sunny, with a high near 74. Calm wind becoming north around 5 mph in the afternoon.
High: 74 °F
Wednesday
Night
Wednesday Night: Patchy fog after 1am.  Otherwise, clear, with a low around 43. North wind around 5 mph becoming calm.
Low: 43 °F
Thursday

Thursday: Patchy fog before 10am.  Otherwise, sunny, with a high near 73. Light northeast wind becoming north northeast 5 to 10 mph in the afternoon.
High: 73 °F
Thursday
Night
Thursday Night: Clear, with a low around 42. Northeast wind around 5 mph.
Low: 42 °F
Friday

Friday: Sunny, with a high near 74. Calm wind becoming northeast around 5 mph in the afternoon.
High: 74 °F
Friday
Night
Friday Night: Clear, with a low around 44. East northeast wind around 5 mph becoming calm  in the evening.
Low: 44 °F
Saturday

Saturday: Sunny, with a high near 74. Calm wind becoming south around 5 mph.
High: 74 °F
Saturday
Night
Saturday Night: Mostly clear, with a low around 42. Calm wind.
Low: 42 °F
Clear
Sunny
Clear then
Patchy Fog
Patchy Fog
then Sunny
Clear
Sunny
Clear
Sunny
Mostly Clear

 

Tonight
 
Clear, with a low around 42. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
 
Sunny, with a high near 74. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
 
Patchy fog after 1am. Otherwise, clear, with a low around 43. North wind around 5 mph becoming calm.
Thursday
 
Patchy fog before 10am. Otherwise, sunny, with a high near 73. Light northeast wind becoming north northeast 5 to 10 mph in the afternoon.
Thursday Night
 
Clear, with a low around 42. Northeast wind around 5 mph.
Friday
 
Sunny, with a high near 74. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
 
Clear, with a low around 44. East northeast wind around 5 mph becoming calm in the evening.
Saturday
 
Sunny, with a high near 74. Calm wind becoming south around 5 mph.
Saturday Night
 
Mostly clear, with a low around 42. Calm wind.
Sunday
 
Sunny, with a high near 73.
Sunday Night
 
Partly cloudy, with a low around 44.
Monday
 
Mostly sunny, with a high near 75.
Monday Night
 
Partly cloudy, with a low around 46.
Tuesday
 
Mostly sunny, with a high near 72.

 

Forecast from NOAA-NWS for Watertown TN.