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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 pm CDT Jul 28, 2026
 
This
Afternoon
This Afternoon: A 30 percent chance of showers and thunderstorms. Sunny, with a high near 95. Heat index values as high as 110. West northwest wind around 10 mph, with gusts as high as 20 mph.
High: 95 °F		 Tonight

Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 70. North wind around 5 mph. Chance of precipitation is 30%.
Low: 70 °F		 Wednesday

Wednesday: Sunny, with a high near 88. Light north northeast wind becoming north 5 to 10 mph in the afternoon.
High: 88 °F		 Wednesday
Night
Wednesday Night: Clear, with a low around 63. North wind around 5 mph.
Low: 63 °F		 Thursday

Thursday: Sunny, with a high near 85. Light northeast wind becoming north northeast 5 to 10 mph in the morning.
High: 85 °F		 Thursday
Night
Thursday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 61. North northeast wind around 5 mph becoming calm.
Low: 61 °F		 Friday

Friday: Mostly sunny, with a high near 87. Calm wind.
High: 87 °F		 Friday
Night
Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Calm wind becoming south around 5 mph.
Low: 68 °F		 Saturday

Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 85. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
High: 85 °F
Chance
T-storms

 Chance
T-storms then
Partly Cloudy
 Sunny

 Clear

 Sunny

 Mostly Clear
then Patchy
Fog
 Mostly Sunny

 Mostly Cloudy
then Chance
T-storms
 Chance
T-storms then
Showers
Likely

Heat Advisory
 

This Afternoon
 
 A 30 percent chance of showers and thunderstorms. Sunny, with a high near 95. Heat index values as high as 110. West northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
 
 A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 70. North wind around 5 mph. Chance of precipitation is 30%.
Wednesday
 
 Sunny, with a high near 88. Light north northeast wind becoming north 5 to 10 mph in the afternoon.
Wednesday Night
 
 Clear, with a low around 63. North wind around 5 mph.
Thursday
 
 Sunny, with a high near 85. Light northeast wind becoming north northeast 5 to 10 mph in the morning.
Thursday Night
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 61. North northeast wind around 5 mph becoming calm.
Friday
 
 Mostly sunny, with a high near 87. Calm wind.
Friday Night
 
 A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Calm wind becoming south around 5 mph.
Saturday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 85. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
 
 Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Sunday
 
 Showers and thunderstorms likely. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Monday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 85. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Watertown TN.