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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 am CDT Oct 2, 2026
 
Overnight

Overnight: Mostly cloudy, with a low around 70. South wind 5 to 10 mph, with gusts as high as 20 mph.
Low: 70 °F		 Friday

Friday: A slight chance of showers and thunderstorms between noon and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. South wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
High: 87 °F		 Friday
Night
Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 62. North northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 62 °F		 Saturday

Saturday: A 30 percent chance of showers, mainly before 10am. Mostly cloudy, with a high near 77. Northeast wind 5 to 10 mph.
High: 77 °F		 Saturday
Night
Saturday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Low: 61 °F		 Sunday

Sunday: A 50 percent chance of showers. Patchy fog before 8am. Otherwise, cloudy, with a high near 76. Calm wind becoming north around 5 mph in the afternoon.
High: 76 °F		 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 51. North northeast wind around 5 mph.
Low: 51 °F		 Monday

Monday: Sunny, with a high near 77. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.
High: 77 °F		 Monday
Night
Monday Night: Mostly clear, with a low around 46. Northeast wind around 10 mph, with gusts as high as 20 mph.
Low: 46 °F
Mostly Cloudy

 Partly Sunny
then Showers
Likely
 Showers
Likely

 Chance
Showers then
Mostly Cloudy
 Mostly Cloudy
then Chance
Showers and
Patchy Fog
 Chance
Showers and
Patchy Fog
 Mostly Cloudy

 Sunny

 Mostly Clear

 

Overnight
 
 Mostly cloudy, with a low around 70. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
 
 A slight chance of showers and thunderstorms between noon and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. South wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 62. North northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 A 30 percent chance of showers, mainly before 10am. Mostly cloudy, with a high near 77. Northeast wind 5 to 10 mph.
Saturday Night
 
 A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Sunday
 
 A 50 percent chance of showers. Patchy fog before 8am. Otherwise, cloudy, with a high near 76. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
 
 Mostly cloudy, with a low around 51. North northeast wind around 5 mph.
Monday
 
 Sunny, with a high near 77. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
 
 Mostly clear, with a low around 46. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
 
 Sunny, with a high near 78.
Tuesday Night
 
 Mostly clear, with a low around 47.
Wednesday
 
 Sunny, with a high near 80.
Wednesday Night
 
 Mostly clear, with a low around 47.
Thursday
 
 Sunny, with a high near 83.

 

Forecast from NOAA-NWS for Watertown TN.