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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 5:41 am CDT Apr 19, 2026
 
Today

Today: Patchy fog before 9am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 64. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
High: 64 °F
Tonight

Tonight: Mostly clear, with a low around 41. Northwest wind around 5 mph becoming calm  in the evening.
Low: 41 °F
Monday

Monday: Sunny, with a high near 69. Calm wind becoming north around 5 mph in the morning.
High: 69 °F
Monday
Night
Monday Night: Clear, with a low around 44. Calm wind.
Low: 44 °F
Tuesday

Tuesday: Sunny, with a high near 78. Southwest wind 5 to 10 mph.
High: 78 °F
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 51. South southwest wind around 5 mph.
Low: 51 °F
Wednesday

Wednesday: Sunny, with a high near 80. West southwest wind 5 to 10 mph.
High: 80 °F
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 54. South wind around 5 mph.
Low: 54 °F
Thursday

Thursday: Sunny, with a high near 83. South southwest wind 5 to 10 mph.
High: 83 °F
Patchy Fog
then Sunny
Mostly Clear
Sunny
Clear
Sunny
Partly Cloudy
Sunny
Mostly Clear
Sunny

Dense Fog Advisory
 

Today
 
Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 64. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
 
Mostly clear, with a low around 41. Northwest wind around 5 mph becoming calm in the evening.
Monday
 
Sunny, with a high near 69. Calm wind becoming north around 5 mph in the morning.
Monday Night
 
Clear, with a low around 44. Calm wind.
Tuesday
 
Sunny, with a high near 78. Southwest wind 5 to 10 mph.
Tuesday Night
 
Partly cloudy, with a low around 51. South southwest wind around 5 mph.
Wednesday
 
Sunny, with a high near 80. West southwest wind 5 to 10 mph.
Wednesday Night
 
Mostly clear, with a low around 54. South wind around 5 mph.
Thursday
 
Sunny, with a high near 83. South southwest wind 5 to 10 mph.
Thursday Night
 
Partly cloudy, with a low around 60.
Friday
 
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Friday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Saturday
 
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 74. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Watertown TN.