Skip to main content.
National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 pm CDT Jul 25, 2026
 
Tonight

Tonight: Showers and thunderstorms likely before 4am, then a chance of showers. Patchy fog after 11pm. Otherwise, partly 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 slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming west northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
High: 90 °F		 Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 71. Calm wind.
Low: 71 °F		 Monday

Monday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 105. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 30%.
High: 93 °F		 Monday
Night
Monday Night: Partly cloudy, with a low around 75. Calm wind becoming south southwest around 5 mph after midnight.
Low: 75 °F		 Tuesday

Tuesday: Mostly sunny, with a high near 95. South southwest wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
High: 95 °F		 Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. North northwest wind around 5 mph.
Low: 72 °F		 Wednesday

Wednesday: Mostly sunny, with a high near 89. North northwest wind 5 to 10 mph.
High: 89 °F		 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 67. North wind around 5 mph becoming calm in the evening.
Low: 67 °F
Showers
Likely and
Patchy Fog
 Slight Chance
T-storms and
Areas Fog
 Partly Cloudy
then Chance
T-storms
 Chance
T-storms then
Chance
Showers
 Partly Cloudy

 Mostly Sunny

 Slight Chance
T-storms

 Mostly Sunny

 Mostly Clear

 

Tonight
 
 Showers and thunderstorms likely before 4am, then a chance of showers. Patchy fog after 11pm. Otherwise, partly 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 slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming west northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 71. Calm wind.
Monday
 
 A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 105. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Monday Night
 
 Partly cloudy, with a low around 75. Calm wind becoming south southwest around 5 mph after midnight.
Tuesday
 
 Mostly sunny, with a high near 95. South southwest wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. North northwest wind around 5 mph.
Wednesday
 
 Mostly sunny, with a high near 89. North northwest wind 5 to 10 mph.
Wednesday Night
 
 Mostly clear, with a low around 67. North wind around 5 mph becoming calm in the evening.
Thursday
 
 Sunny, with a high near 88.
Thursday Night
 
 Mostly clear, with a low around 66.
Friday
 
 Mostly sunny, with a high near 89.
Friday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Saturday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Watertown TN.