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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:51 pm CDT Jul 2, 2026
 
This
Afternoon
This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 110. North northeast wind around 5 mph.
High: 98 °F		 Tonight

Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Northeast wind around 5 mph becoming calm.
Low: 75 °F		 Friday

Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming northwest around 5 mph in the afternoon.
High: 99 °F		 Friday
Night
Friday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Partly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Low: 74 °F		 Independence
Day
Independence Day: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny and hot, with a high near 97. Calm wind becoming north northwest around 5 mph. Chance of precipitation is 30%.
High: 97 °F		 Saturday
Night
Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Calm wind.
Low: 74 °F		 Sunday

Sunday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Calm wind becoming west southwest around 5 mph in the afternoon.
High: 95 °F		 Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. Calm wind.
Low: 73 °F		 Monday

Monday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.
High: 93 °F
Chance
T-storms

 Slight Chance
T-storms then
Partly Cloudy
 Sunny then
Chance
T-storms
 Chance
T-storms then
Slight Chance
Showers
 Chance
T-storms

 Slight Chance
T-storms

 Chance
T-storms

 Chance
T-storms

 Mostly Sunny
then Chance
T-storms

Extreme Heat Warning
Heat Advisory
Severe Thunderstorm Watch
 

This Afternoon
 
 A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 110. North northeast wind around 5 mph.
Tonight
 
 A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Northeast wind around 5 mph becoming calm.
Friday
 
 A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
 
 A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Partly cloudy, with a low around 74. East southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Independence Day
 
 A chance of showers, with thunderstorms also possible after 10am. Mostly sunny and hot, with a high near 97. Calm wind becoming north northwest around 5 mph. Chance of precipitation is 30%.
Saturday Night
 
 A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Calm wind.
Sunday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. Calm wind.
Monday
 
 A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
 
 A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Tuesday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Watertown TN.