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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 6:31 am CDT Jul 25, 2026
 
Today

Today: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 85. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 40%.
High: 85 °F		 Tonight

Tonight: Showers and thunderstorms likely, mainly before 3am. Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Low: 71 °F		 Sunday

Sunday: A 20 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 89. Heat index values as high as 99. Calm wind becoming northwest around 5 mph in the afternoon.
High: 89 °F		 Sunday
Night
Sunday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Low: 71 °F		 Monday

Monday: Areas of fog before 8am. Otherwise, mostly sunny, with a high near 93. Calm wind becoming south southwest around 5 mph.
High: 93 °F		 Monday
Night
Monday Night: Partly cloudy, with a low around 75. Calm wind becoming south southwest around 5 mph in the evening.
Low: 75 °F		 Tuesday

Tuesday: Mostly sunny, with a high near 95. South southwest wind 5 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
High: 95 °F		 Tuesday
Night
Tuesday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 71. Northwest wind around 5 mph.
Low: 71 °F		 Wednesday

Wednesday: Mostly sunny, with a high near 90. North wind 5 to 10 mph.
High: 90 °F
Chance
Showers then
Chance
T-storms
 Showers
Likely and
Patchy Fog
 Slight Chance
T-storms and
Areas Fog
 Partly Cloudy
then Patchy
Fog
 Areas Fog
then Mostly
Sunny
 Partly Cloudy

 Mostly Sunny

 Slight Chance
Showers

 Mostly Sunny

 

Today
 
 A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 85. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 40%.
Tonight
 
 Showers and thunderstorms likely, mainly before 3am. Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 A 20 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 89. Heat index values as high as 99. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
 
 Patchy fog after 4am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Monday
 
 Areas of fog before 8am. Otherwise, mostly sunny, with a high near 93. Calm wind becoming south southwest around 5 mph.
Monday Night
 
 Partly cloudy, with a low around 75. Calm wind becoming south southwest around 5 mph in the evening.
Tuesday
 
 Mostly sunny, with a high near 95. South southwest wind 5 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
 
 A 20 percent chance of showers before 1am. Partly cloudy, with a low around 71. Northwest wind around 5 mph.
Wednesday
 
 Mostly sunny, with a high near 90. North wind 5 to 10 mph.
Wednesday Night
 
 Mostly clear, with a low around 67.
Thursday
 
 Sunny, with a high near 90.
Thursday Night
 
 Partly cloudy, with a low around 69.
Friday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Watertown TN.