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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 7:06 pm CDT Aug 17, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 68. North northwest wind around 5 mph.
Low: 68 °F		 Tuesday

Tuesday: Sunny, with a high near 88. Calm wind becoming north northwest around 5 mph in the morning.
High: 88 °F		 Tuesday
Night
Tuesday Night: Clear, with a low around 65. Calm wind.
Low: 65 °F		 Wednesday

Wednesday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 92. Calm wind becoming north northeast around 5 mph.
High: 92 °F		 Wednesday
Night
Wednesday Night: A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Calm wind.
Low: 71 °F		 Thursday

Thursday: Showers likely and possibly a thunderstorm, mainly before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. West southwest wind around 5 mph. Chance of precipitation is 60%.
High: 88 °F		 Thursday
Night
Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 68. Calm wind.
Low: 68 °F		 Friday

Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.
High: 87 °F		 Friday
Night
Friday Night: Mostly clear, with a low around 66. North wind around 5 mph becoming calm.
Low: 66 °F
Partly Cloudy

 Sunny

 Clear

 Patchy Fog
then Mostly
Sunny
 Partly Cloudy
then Chance
T-storms
 Showers
Likely

 Chance
T-storms

 Chance
Showers then
Chance
T-storms
 Mostly Clear

 

Tonight
 
 Partly cloudy, with a low around 68. North northwest wind around 5 mph.
Tuesday
 
 Sunny, with a high near 88. Calm wind becoming north northwest around 5 mph in the morning.
Tuesday Night
 
 Clear, with a low around 65. Calm wind.
Wednesday
 
 Patchy fog before 7am. Otherwise, mostly sunny, with a high near 92. Calm wind becoming north northeast around 5 mph.
Wednesday Night
 
 A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Calm wind.
Thursday
 
 Showers likely and possibly a thunderstorm, mainly before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. West southwest wind around 5 mph. Chance of precipitation is 60%.
Thursday Night
 
 A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 68. Calm wind.
Friday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
 
 Mostly clear, with a low around 66. North wind around 5 mph becoming calm.
Saturday
 
 Sunny, with a high near 88.
Saturday Night
 
 Mostly clear, with a low around 66.
Sunday
 
 Sunny, with a high near 87.
Sunday Night
 
 Mostly clear, with a low around 63.
Monday
 
 Mostly sunny, with a high near 87.

 

Forecast from NOAA-NWS for Watertown TN.