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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 11:56 am CDT Sep 8, 2026
 
This
Afternoon
This Afternoon: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 90. South wind around 10 mph. Chance of precipitation is 20%.
High: 90 °F		 Tonight

Tonight: Mostly clear, with a low around 69. South wind around 5 mph.
Low: 69 °F		 Wednesday

Wednesday: Sunny, with a high near 91. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
High: 91 °F		 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 70. South wind around 5 mph.
Low: 70 °F		 Thursday

Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West southwest wind around 10 mph.
High: 93 °F		 Thursday
Night
Thursday Night: A chance of showers and thunderstorms. Patchy fog before midnight, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 67. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Low: 67 °F		 Friday

Friday: A 50 percent chance of showers and thunderstorms. Patchy fog before 9am. Otherwise, partly sunny, with a high near 88. Calm wind becoming west northwest around 5 mph.
High: 88 °F		 Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67. Calm wind.
Low: 67 °F		 Saturday

Saturday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. South southeast wind around 5 mph becoming west southwest in the afternoon.
High: 91 °F
Slight Chance
T-storms

 Mostly Clear


 Sunny


 Mostly Clear


 Sunny then
Chance
T-storms

 Chance
T-storms and
Patchy Fog

 Chance
Showers and
Patchy Fog
then Chance
T-storms
 Chance
T-storms

 Chance
T-storms

 

This Afternoon
 
 A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 90. South wind around 10 mph. Chance of precipitation is 20%.
Tonight
 
 Mostly clear, with a low around 69. South wind around 5 mph.
Wednesday
 
 Sunny, with a high near 91. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
 
 Mostly clear, with a low around 70. South wind around 5 mph.
Thursday
 
 A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West southwest wind around 10 mph.
Thursday Night
 
 A chance of showers and thunderstorms. Patchy fog before midnight, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 67. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Friday
 
 A 50 percent chance of showers and thunderstorms. Patchy fog before 9am. Otherwise, partly sunny, with a high near 88. Calm wind becoming west northwest around 5 mph.
Friday Night
 
 A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 67. Calm wind.
Saturday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. South southeast wind around 5 mph becoming west southwest in the afternoon.
Saturday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Sunday Night
 
 A 20 percent chance of showers. Mostly clear, with a low around 67.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Watertown TN.