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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 6:52 pm CDT May 21, 2026
 
Tonight

Tonight: Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 62. East wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 62 °F		 Friday

Friday: Showers and possibly a thunderstorm. High near 76. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
High: 76 °F		 Friday
Night
Friday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 63. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 63 °F		 Saturday

Saturday: Showers, with thunderstorms also possible after 10am. High near 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
High: 80 °F		 Saturday
Night
Saturday Night: A chance of showers and thunderstorms. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%.
Low: 63 °F		 Sunday

Sunday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 70%.
High: 82 °F		 Sunday
Night
Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 70%.
Low: 64 °F		 Memorial
Day
Memorial Day: Showers and possibly a thunderstorm. High near 79. Calm wind becoming south around 5 mph. Chance of precipitation is 90%.
High: 79 °F		 Monday
Night
Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 70%.
Low: 64 °F
Showers
Likely
 Showers

 Showers

 Showers

 Chance
Showers and
Patchy Fog
 Showers
Likely
 Showers
Likely
 Showers

 Showers
Likely

 

Tonight
 
 Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 62. East wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
 
 Showers and possibly a thunderstorm. High near 76. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday Night
 
 Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 63. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Showers, with thunderstorms also possible after 10am. High near 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Saturday Night
 
 A chance of showers and thunderstorms. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%.
Sunday
 
 A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 70%.
Sunday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 70%.
Memorial Day
 
 Showers and possibly a thunderstorm. High near 79. Calm wind becoming south around 5 mph. Chance of precipitation is 90%.
Monday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 70%.
Tuesday
 
 Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.
Tuesday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Wednesday
 
 Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 70%.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Thursday
 
 A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Watertown TN.