Skip to main content.
National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 am CDT Aug 7, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 71. South wind around 5 mph.
Low: 71 °F		 Friday

Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Heat index values as high as 98. South southwest wind around 5 mph.
High: 90 °F		 Friday
Night
Friday Night: Partly cloudy, with a low around 72. South wind around 5 mph.
Low: 72 °F		 Saturday

Saturday: A 50 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 90. Heat index values as high as 98. South southwest wind around 5 mph.
High: 90 °F		 Saturday
Night
Saturday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 20%.
Low: 71 °F		 Sunday

Sunday: A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
High: 91 °F		 Sunday
Night
Sunday Night: Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph.
Low: 72 °F		 Monday

Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South southwest wind around 5 mph.
High: 91 °F		 Monday
Night
Monday Night: Partly cloudy, with a low around 73. South wind around 5 mph.
Low: 73 °F
Partly Cloudy

 Mostly Sunny
then Slight
Chance
T-storms
 Partly Cloudy

 Slight Chance
T-storms then
Chance
T-storms
 Slight Chance
T-storms then
Slight Chance
Showers
 Slight Chance
T-storms

 Partly Cloudy

 Sunny then
Slight Chance
T-storms
 Partly Cloudy

 

Overnight
 
 Partly cloudy, with a low around 71. South wind around 5 mph.
Friday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Heat index values as high as 98. South southwest wind around 5 mph.
Friday Night
 
 Partly cloudy, with a low around 72. South wind around 5 mph.
Saturday
 
 A 50 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 90. Heat index values as high as 98. South southwest wind around 5 mph.
Saturday Night
 
 A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 20%.
Sunday
 
 A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
 
 Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph.
Monday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South southwest wind around 5 mph.
Monday Night
 
 Partly cloudy, with a low around 73. South wind around 5 mph.
Tuesday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Wednesday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Wednesday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Thursday
 
 Showers and thunderstorms likely. Partly sunny, with a high near 87. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Watertown TN.