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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 pm CDT Jun 18, 2026
 
This
Afternoon
This Afternoon: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 86. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
High: 86 °F		 Tonight

Tonight: Showers and thunderstorms before 2am, then a chance of showers. Patchy fog between 11pm and 3am. Low around 66. South wind around 5 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 66 °F		 Juneteenth

Juneteenth: Mostly sunny, with a high near 83. North northwest wind around 5 mph.
High: 83 °F		 Friday
Night
Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. North wind around 5 mph becoming calm in the evening.
Low: 60 °F		 Saturday

Saturday: Areas of fog before 7am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming east around 5 mph.
High: 86 °F		 Saturday
Night
Saturday Night: Partly cloudy, with a low around 66. Calm wind.
Low: 66 °F		 Sunday

Sunday: A chance of showers, then showers and thunderstorms likely after 10am. Mostly sunny, with a high near 88. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
High: 88 °F		 Sunday
Night
Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Low: 71 °F		 Monday

Monday: Showers and possibly a thunderstorm. High near 83. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
High: 83 °F
T-storms


 T-storms and
Patchy Fog
then Chance
Showers and
Patchy Fog
 Mostly Sunny


 Partly Cloudy
then Patchy
Fog

 Areas Fog
then Mostly
Sunny

 Partly Cloudy


 Chance
T-storms then
T-storms
Likely
 Chance
T-storms then
Showers
Likely
 Showers then
T-storms

 

This Afternoon
 
 Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 86. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 Showers and thunderstorms before 2am, then a chance of showers. Patchy fog between 11pm and 3am. Low around 66. South wind around 5 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Juneteenth
 
 Mostly sunny, with a high near 83. North northwest wind around 5 mph.
Friday Night
 
 Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. North wind around 5 mph becoming calm in the evening.
Saturday
 
 Areas of fog before 7am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming east around 5 mph.
Saturday Night
 
 Partly cloudy, with a low around 66. Calm wind.
Sunday
 
 A chance of showers, then showers and thunderstorms likely after 10am. Mostly sunny, with a high near 88. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Monday
 
 Showers and possibly a thunderstorm. High near 83. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Monday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Tuesday
 
 A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Wednesday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Watertown TN.