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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 pm CDT Sep 21, 2026
 
Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 66. Calm wind.
Low: 66 °F		 Tuesday

Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86. Light north wind increasing to 5 to 10 mph in the afternoon.
High: 86 °F		 Tuesday
Night
Tuesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 63. North northeast wind around 5 mph.
Low: 63 °F		 Wednesday

Wednesday: Partly sunny, with a high near 81. North wind 5 to 10 mph.
High: 81 °F		 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 60. North wind around 5 mph becoming calm in the evening.
Low: 60 °F		 Thursday

Thursday: Mostly sunny, with a high near 82. Calm wind becoming north around 5 mph in the afternoon.
High: 82 °F		 Thursday
Night
Thursday Night: Mostly clear, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Low: 57 °F		 Friday

Friday: Mostly sunny, with a high near 80. Light northeast wind becoming north 5 to 10 mph in the morning.
High: 80 °F		 Friday
Night
Friday Night: Mostly clear, with a low around 54. Northeast wind around 5 mph.
Low: 54 °F
Slight Chance
T-storms and
Patchy Fog
 Patchy Fog
then Chance
T-storms
 Slight Chance
T-storms then
Mostly Cloudy
 Partly Sunny

 Partly Cloudy

 Mostly Sunny

 Mostly Clear

 Mostly Sunny

 Mostly Clear

 

Tonight
 
 A 20 percent chance of showers and thunderstorms before 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 66. Calm wind.
Tuesday
 
 A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86. Light north wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
 
 A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 63. North northeast wind around 5 mph.
Wednesday
 
 Partly sunny, with a high near 81. North wind 5 to 10 mph.
Wednesday Night
 
 Partly cloudy, with a low around 60. North wind around 5 mph becoming calm in the evening.
Thursday
 
 Mostly sunny, with a high near 82. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Friday
 
 Mostly sunny, with a high near 80. Light northeast wind becoming north 5 to 10 mph in the morning.
Friday Night
 
 Mostly clear, with a low around 54. Northeast wind around 5 mph.
Saturday
 
 Mostly sunny, with a high near 81.
Saturday Night
 
 Partly cloudy, with a low around 53.
Sunday
 
 Mostly sunny, with a high near 83.
Sunday Night
 
 Partly cloudy, with a low around 55.
Monday
 
 Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Watertown TN.