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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 4:56 am CDT Jul 4, 2026
 
Independence
Day
Independence Day: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 95. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
High: 95 °F		 Tonight

Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 72. West wind around 5 mph becoming calm.
Low: 72 °F		 Sunday

Sunday: Showers and thunderstorms likely, mainly between 2pm and 4pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 92. Heat index values as high as 101. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
High: 92 °F		 Sunday
Night
Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Patchy fog before 3am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 40%.
Low: 72 °F		 Monday

Monday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.
High: 91 °F		 Monday
Night
Monday Night: A 30 percent chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Low: 71 °F		 Tuesday

Tuesday: A 50 percent chance of showers and thunderstorms. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.
High: 90 °F		 Tuesday
Night
Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm.
Low: 71 °F		 Wednesday

Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. Calm wind becoming west northwest around 5 mph in the afternoon.
High: 90 °F
Slight Chance
Showers then
Slight Chance
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T-storms and
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 Chance
T-storms and
Patchy Fog

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T-storms then
T-storms
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 Chance
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Chance
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Patchy Fog
 Chance
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 Partly Cloudy
then Slight
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 Slight Chance
T-storms then
Chance
T-storms

Heat Advisory
 

Independence Day
 
 A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 95. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
 
 A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 72. West wind around 5 mph becoming calm.
Sunday
 
 Showers and thunderstorms likely, mainly between 2pm and 4pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 92. Heat index values as high as 101. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers. Patchy fog before 3am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 40%.
Monday
 
 Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Monday Night
 
 A 30 percent chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Tuesday
 
 A 50 percent chance of showers and thunderstorms. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
 
 A 20 percent chance of showers after 1am. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm.
Wednesday
 
 A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. Calm wind becoming west northwest around 5 mph in the afternoon.
Wednesday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Thursday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Thursday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Friday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 70%.

 

Forecast from NOAA-NWS for Watertown TN.