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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 7:16 pm CDT Jun 8, 2026
 
Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 70. South wind around 5 mph.
Low: 70 °F		 Tuesday

Tuesday: A chance of showers and thunderstorms before 9am, then showers likely and possibly a thunderstorm between 9am and 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 87. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
High: 87 °F		 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 71. South southwest wind around 5 mph.
Low: 71 °F		 Wednesday

Wednesday: Sunny, with a high near 90. Heat index values as high as 98. Southwest wind 5 to 10 mph.
High: 90 °F		 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 72. South wind around 5 mph.
Low: 72 °F		 Thursday

Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Southwest wind 5 to 10 mph.
High: 90 °F		 Thursday
Night
Thursday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 73. South southwest wind around 5 mph.
Low: 73 °F		 Friday

Friday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 90. South southwest wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 70%.
High: 90 °F		 Friday
Night
Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 67. Northwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Low: 67 °F
Mostly Cloudy
then Chance
Showers
 Showers
Likely then
Chance
T-storms
 Mostly Cloudy

 Sunny

 Mostly Clear

 Sunny then
Slight Chance
T-storms
 Mostly Clear
then Slight
Chance
Showers
 T-storms
Likely

 Chance
T-storms

Flood Watch
 

Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 70. South wind around 5 mph.
Tuesday
 
 A chance of showers and thunderstorms before 9am, then showers likely and possibly a thunderstorm between 9am and 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 87. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
 
 Mostly cloudy, with a low around 71. South southwest wind around 5 mph.
Wednesday
 
 Sunny, with a high near 90. Heat index values as high as 98. Southwest wind 5 to 10 mph.
Wednesday Night
 
 Mostly clear, with a low around 72. South wind around 5 mph.
Thursday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Southwest wind 5 to 10 mph.
Thursday Night
 
 A 20 percent chance of showers after 1am. Mostly clear, with a low around 73. South southwest wind around 5 mph.
Friday
 
 Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 90. South southwest wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 70%.
Friday Night
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 67. Northwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Saturday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Sunday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Sunday Night
 
 A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Monday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Watertown TN.