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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 10:36 pm CDT Aug 2, 2026
 
Tonight

Tonight: A slight chance of showers before 1am, then a slight chance of sprinkles after 1am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.
Low: 67 °F		 Monday

Monday: Mostly cloudy, then gradually becoming sunny, with a high near 83. North wind 5 to 10 mph.
High: 83 °F		 Monday
Night
Monday Night: Mostly clear, with a low around 64. North wind around 5 mph becoming calm in the evening.
Low: 64 °F		 Tuesday

Tuesday: A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
High: 87 °F		 Tuesday
Night
Tuesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog before 3am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 68. North wind around 5 mph becoming calm.
Low: 68 °F		 Wednesday

Wednesday: A chance of showers, with thunderstorms also possible after 10am. Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west southwest around 5 mph. Chance of precipitation is 40%.
High: 88 °F		 Wednesday
Night
Wednesday Night: A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 10%.
Low: 69 °F		 Thursday

Thursday: Sunny, with a high near 91. South southwest wind around 5 mph.
High: 91 °F		 Thursday
Night
Thursday Night: Partly cloudy, with a low around 71. South wind around 5 mph.
Low: 71 °F
Slight Chance
Showers

 Decreasing
Clouds

 Mostly Clear


 Sunny then
Slight Chance
T-storms

 Slight Chance
T-storms then
Patchy Fog

 Chance
Showers and
Patchy Fog
then Chance
T-storms
 Slight Chance
T-storms then
Mostly Clear

 Sunny


 Partly Cloudy

 

Tonight
 
 A slight chance of showers before 1am, then a slight chance of sprinkles after 1am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.
Monday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 83. North wind 5 to 10 mph.
Monday Night
 
 Mostly clear, with a low around 64. North wind around 5 mph becoming calm in the evening.
Tuesday
 
 A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
 
 A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog before 3am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 68. North wind around 5 mph becoming calm.
Wednesday
 
 A chance of showers, with thunderstorms also possible after 10am. Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west southwest around 5 mph. Chance of precipitation is 40%.
Wednesday Night
 
 A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 10%.
Thursday
 
 Sunny, with a high near 91. South southwest wind around 5 mph.
Thursday Night
 
 Partly cloudy, with a low around 71. South wind around 5 mph.
Friday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Friday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Saturday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Saturday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Watertown TN.