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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 6:26 pm CDT Jul 14, 2026
 
Tonight

Tonight: Patchy fog before 1am, then patchy fog after 2am. Otherwise, partly cloudy, with a low around 68. Calm wind.
Low: 68 °F		 Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Areas of fog before 8am. Otherwise, partly sunny, with a high near 87. Calm wind becoming south southeast around 5 mph.
High: 87 °F		 Wednesday
Night
Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 70. Calm wind.
Low: 70 °F		 Thursday

Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 89. Heat index values as high as 98. Calm wind becoming southwest around 5 mph.
High: 89 °F		 Thursday
Night
Thursday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Low: 71 °F		 Friday

Friday: A chance of showers, then showers and thunderstorms likely after 10am. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 70%.
High: 88 °F		 Friday
Night
Friday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Low: 71 °F		 Saturday

Saturday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 70%.
High: 89 °F		 Saturday
Night
Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 72. West northwest wind around 5 mph becoming calm. Chance of precipitation is 40%.
Low: 72 °F
Patchy Fog

 Areas Fog
then Chance
T-storms
 Slight Chance
T-storms then
Patchy Fog
 Patchy Fog
then Chance
T-storms
 Partly Cloudy
then Patchy
Fog
 T-storms
Likely and
Patchy Fog
 Slight Chance
T-storms then
Chance
Showers
 T-storms
Likely

 Chance
T-storms

 

Tonight
 
 Patchy fog before 1am, then patchy fog after 2am. Otherwise, partly cloudy, with a low around 68. Calm wind.
Wednesday
 
 A 30 percent chance of showers and thunderstorms, mainly after 5pm. Areas of fog before 8am. Otherwise, partly sunny, with a high near 87. Calm wind becoming south southeast around 5 mph.
Wednesday Night
 
 A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 70. Calm wind.
Thursday
 
 A 50 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 89. Heat index values as high as 98. Calm wind becoming southwest around 5 mph.
Thursday Night
 
 Patchy fog after 1am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Friday
 
 A chance of showers, then showers and thunderstorms likely after 10am. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Friday Night
 
 A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Saturday
 
 Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 70%.
Saturday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 72. West northwest wind around 5 mph becoming calm. Chance of precipitation is 40%.
Sunday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90.
Sunday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Monday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Tuesday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

 

Forecast from NOAA-NWS for Watertown TN.