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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 10:31 am CDT Aug 4, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 88. North wind around 5 mph.
High: 88 °F		 Tonight

Tonight: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 69. North northeast wind around 5 mph becoming calm.
Low: 69 °F		 Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 88. Heat index values as high as 97. Calm wind becoming west northwest around 5 mph.
High: 88 °F		 Wednesday
Night
Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog between 11pm and midnight. Otherwise, mostly clear, with a low around 70. Calm wind becoming south around 5 mph.
Low: 70 °F		 Thursday

Thursday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. South southwest wind around 5 mph. Chance of precipitation is 20%.
High: 90 °F		 Thursday
Night
Thursday Night: Partly cloudy, with a low around 71. South southeast wind around 5 mph.
Low: 71 °F		 Friday

Friday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. South southwest wind around 5 mph.
High: 89 °F		 Friday
Night
Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind around 5 mph. Chance of precipitation is 20%.
Low: 70 °F		 Saturday

Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 89. South southwest wind around 5 mph. Chance of precipitation is 60%.
High: 89 °F
Sunny


 Patchy Fog


 Chance
T-storms and
Areas Fog

 Slight Chance
T-storms and
Patchy Fog
then Mostly
Clear
 Slight Chance
Showers then
Slight Chance
T-storms
 Partly Cloudy


 Mostly Sunny
then Chance
T-storms

 Slight Chance
T-storms

 Chance
T-storms then
Showers
Likely

 

This Afternoon
 
 Sunny, with a high near 88. North wind around 5 mph.
Tonight
 
 Patchy fog after 11pm. Otherwise, mostly clear, with a low around 69. North northeast wind around 5 mph becoming calm.
Wednesday
 
 A 40 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 88. Heat index values as high as 97. Calm wind becoming west northwest around 5 mph.
Wednesday Night
 
 A 10 percent chance of showers and thunderstorms before 7pm. Patchy fog between 11pm and midnight. Otherwise, mostly clear, with a low around 70. Calm wind becoming south around 5 mph.
Thursday
 
 A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. South southwest wind around 5 mph. Chance of precipitation is 20%.
Thursday Night
 
 Partly cloudy, with a low around 71. South southeast wind around 5 mph.
Friday
 
 A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. South southwest wind around 5 mph.
Friday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind around 5 mph. Chance of precipitation is 20%.
Saturday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 89. South southwest wind around 5 mph. Chance of precipitation is 60%.
Saturday Night
 
 A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70.
Sunday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Sunday Night
 
 Partly cloudy, with a low around 71.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Watertown TN.