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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 6:26 pm CDT Jun 21, 2026
 
Tonight

Tonight: A chance of showers and thunderstorms between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 72. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 72 °F		 Monday

Monday: Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 82. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
High: 82 °F		 Monday
Night
Monday Night: Showers likely before 11pm, then a slight chance of showers after 3am. Mostly cloudy, with a low around 63. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Low: 63 °F		 Tuesday

Tuesday: Mostly sunny, with a high near 82. Calm wind becoming north around 5 mph in the morning.
High: 82 °F		 Tuesday
Night
Tuesday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 61. North wind around 5 mph becoming calm.
Low: 61 °F		 Wednesday

Wednesday: Patchy fog before 7am. Otherwise, sunny, with a high near 86. Calm wind becoming east around 5 mph.
High: 86 °F		 Wednesday
Night
Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67. Calm wind.
Low: 67 °F		 Thursday

Thursday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
High: 88 °F		 Thursday
Night
Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 30%.
Low: 68 °F
Partly Cloudy
then Showers
Likely
 Showers

 Showers
Likely then
Slight Chance
Showers
 Mostly Sunny

 Partly Cloudy
then Patchy
Fog
 Patchy Fog
then Sunny

 Chance
T-storms

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

 

Tonight
 
 A chance of showers and thunderstorms between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 72. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
 
 Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 82. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
 
 Showers likely before 11pm, then a slight chance of showers after 3am. Mostly cloudy, with a low around 63. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Mostly sunny, with a high near 82. Calm wind becoming north around 5 mph in the morning.
Tuesday Night
 
 Patchy fog after 2am. Otherwise, partly cloudy, with a low around 61. North wind around 5 mph becoming calm.
Wednesday
 
 Patchy fog before 7am. Otherwise, sunny, with a high near 86. Calm wind becoming east around 5 mph.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67. Calm wind.
Thursday
 
 A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Calm wind. Chance of precipitation is 30%.
Friday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Friday Night
 
 A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Saturday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

 

Forecast from NOAA-NWS for Watertown TN.