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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 6:11 pm CDT Aug 26, 2026
 
Tonight

Tonight: Patchy fog after 4am. Otherwise, increasing clouds, with a low around 68. Calm wind.
Low: 68 °F		 Thursday

Thursday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind becoming west northwest around 5 mph in the afternoon.
High: 90 °F		 Thursday
Night
Thursday Night: A 30 percent chance of showers and thunderstorms before 7pm. Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 65. North northwest wind around 5 mph becoming calm.
Low: 65 °F		 Friday

Friday: Patchy fog before 9am. Otherwise, sunny, with a high near 89. Light north wind increasing to 5 to 10 mph in the afternoon.
High: 89 °F		 Friday
Night
Friday Night: Mostly clear, with a low around 63. North northeast wind around 5 mph becoming calm in the evening.
Low: 63 °F		 Saturday

Saturday: Sunny, with a high near 91. Calm wind becoming east northeast around 5 mph.
High: 91 °F		 Saturday
Night
Saturday Night: Mostly clear, with a low around 67. Calm wind.
Low: 67 °F		 Sunday

Sunday: Sunny, with a high near 92. South southwest wind around 5 mph.
High: 92 °F		 Sunday
Night
Sunday Night: Mostly clear, with a low around 69. Calm wind becoming south southeast around 5 mph in the evening.
Low: 69 °F
Partly Cloudy
then Patchy
Fog
 Patchy Fog
then Chance
T-storms
 Chance
T-storms then
Patchy Fog
 Patchy Fog
then Sunny
 Mostly Clear

 Sunny

 Mostly Clear

 Sunny

 Mostly Clear

 

Tonight
 
 Patchy fog after 4am. Otherwise, increasing clouds, with a low around 68. Calm wind.
Thursday
 
 A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind becoming west northwest around 5 mph in the afternoon.
Thursday Night
 
 A 30 percent chance of showers and thunderstorms before 7pm. Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 65. North northwest wind around 5 mph becoming calm.
Friday
 
 Patchy fog before 9am. Otherwise, sunny, with a high near 89. Light north wind increasing to 5 to 10 mph in the afternoon.
Friday Night
 
 Mostly clear, with a low around 63. North northeast wind around 5 mph becoming calm in the evening.
Saturday
 
 Sunny, with a high near 91. Calm wind becoming east northeast around 5 mph.
Saturday Night
 
 Mostly clear, with a low around 67. Calm wind.
Sunday
 
 Sunny, with a high near 92. South southwest wind around 5 mph.
Sunday Night
 
 Mostly clear, with a low around 69. Calm wind becoming south southeast around 5 mph in the evening.
Monday
 
 Sunny, with a high near 93.
Monday Night
 
 Mostly clear, with a low around 71.
Tuesday
 
 Sunny, with a high near 94.
Tuesday Night
 
 Partly cloudy, with a low around 71.
Wednesday
 
 A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.

 

Forecast from NOAA-NWS for Watertown TN.