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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 pm CDT Jun 26, 2026
 
Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 73. South wind 5 to 10 mph.
Low: 73 °F		 Saturday

Saturday: Showers and thunderstorms likely before noon, then showers and possibly a thunderstorm between noon and 4pm, then showers and thunderstorms likely after 4pm. High near 86. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
High: 86 °F		 Saturday
Night
Saturday Night: Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 71 °F		 Sunday

Sunday: A chance of showers, with thunderstorms also possible after 10am. Sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 30%.
High: 92 °F		 Sunday
Night
Sunday Night: Mostly clear, with a low around 74. Calm wind.
Low: 74 °F		 Monday

Monday: Sunny, with a high near 94. Calm wind becoming west northwest around 5 mph.
High: 94 °F		 Monday
Night
Monday Night: Clear, with a low around 75. Calm wind.
Low: 75 °F		 Tuesday

Tuesday: Sunny, with a high near 95. Calm wind becoming north northeast around 5 mph.
High: 95 °F		 Tuesday
Night
Tuesday Night: Clear, with a low around 76. Calm wind.
Low: 76 °F
Chance
T-storms

 Showers
Likely then
T-storms
 Showers
Likely

 Chance
Showers then
Chance
T-storms
 Mostly Clear

 Sunny

 Clear

 Sunny

 Clear

Flood Watch
 

Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 73. South wind 5 to 10 mph.
Saturday
 
 Showers and thunderstorms likely before noon, then showers and possibly a thunderstorm between noon and 4pm, then showers and thunderstorms likely after 4pm. High near 86. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
 Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 A chance of showers, with thunderstorms also possible after 10am. Sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 30%.
Sunday Night
 
 Mostly clear, with a low around 74. Calm wind.
Monday
 
 Sunny, with a high near 94. Calm wind becoming west northwest around 5 mph.
Monday Night
 
 Clear, with a low around 75. Calm wind.
Tuesday
 
 Sunny, with a high near 95. Calm wind becoming north northeast around 5 mph.
Tuesday Night
 
 Clear, with a low around 76. Calm wind.
Wednesday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95.
Wednesday Night
 
 Mostly clear, with a low around 76.
Thursday
 
 Sunny and hot, with a high near 97.
Thursday Night
 
 Mostly clear, with a low around 77.
Friday
 
 A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 97.

 

Forecast from NOAA-NWS for Watertown TN.