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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 5:26 am CDT Sep 6, 2026
 
Today

Today: Patchy fog before 8am. Otherwise, sunny, with a high near 92. Heat index values as high as 99. Light and variable wind becoming north 5 to 10 mph in the afternoon.
High: 92 °F		 Tonight

Tonight: Mostly clear, with a low around 65. Northeast wind 5 to 10 mph.
Low: 65 °F		 Labor
Day
Labor Day: Mostly sunny, with a high near 89. Northeast wind around 5 mph.
High: 89 °F		 Monday
Night
Monday Night: Partly cloudy, with a low around 67. East wind around 5 mph becoming south southeast after midnight.
Low: 67 °F		 Tuesday

Tuesday: Sunny, with a high near 90. South wind 5 to 10 mph.
High: 90 °F		 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 68. South southeast wind around 5 mph.
Low: 68 °F		 Wednesday

Wednesday: Sunny, with a high near 91. South southwest wind 5 to 10 mph.
High: 91 °F		 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 70. Calm wind becoming south southwest around 5 mph in the evening.
Low: 70 °F		 Thursday

Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southwest wind 5 to 10 mph becoming west in the afternoon.
High: 93 °F
Patchy Fog
then Sunny
 Mostly Clear

 Mostly Sunny

 Partly Cloudy

 Sunny

 Mostly Clear

 Sunny

 Mostly Clear

 Sunny then
Chance
T-storms

 

Today
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 92. Heat index values as high as 99. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Tonight
 
 Mostly clear, with a low around 65. Northeast wind 5 to 10 mph.
Labor Day
 
 Mostly sunny, with a high near 89. Northeast wind around 5 mph.
Monday Night
 
 Partly cloudy, with a low around 67. East wind around 5 mph becoming south southeast after midnight.
Tuesday
 
 Sunny, with a high near 90. South wind 5 to 10 mph.
Tuesday Night
 
 Mostly clear, with a low around 68. South southeast wind around 5 mph.
Wednesday
 
 Sunny, with a high near 91. South southwest wind 5 to 10 mph.
Wednesday Night
 
 Mostly clear, with a low around 70. Calm wind becoming south southwest around 5 mph in the evening.
Thursday
 
 A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southwest wind 5 to 10 mph becoming west in the afternoon.
Thursday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 40%.
Friday
 
 A 20 percent chance of showers. Mostly sunny, with a high near 89.
Friday Night
 
 A 20 percent chance of showers. Partly cloudy, with a low around 64.
Saturday
 
 A 30 percent chance of showers. Sunny, with a high near 90.

 

Forecast from NOAA-NWS for Watertown TN.