Skip to main content.
National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 5:26 am CDT Jul 31, 2026
 
Today

Today: Mostly sunny, with a high near 89. Calm wind.
High: 89 °F		 Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight.
Low: 71 °F		 Saturday

Saturday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 88. Heat index values as high as 98. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
High: 88 °F		 Saturday
Night
Saturday Night: Showers and thunderstorms before 10pm, then a chance of showers. Low around 68. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Low: 68 °F		 Sunday

Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
High: 83 °F		 Sunday
Night
Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Patchy fog between 1am and 3am. Otherwise, partly cloudy, with a low around 67. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Low: 67 °F		 Monday

Monday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the morning.
High: 84 °F		 Monday
Night
Monday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 67. North wind around 5 mph becoming calm.
Low: 67 °F		 Tuesday

Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 50%.
High: 86 °F
Mostly Sunny

 Partly Cloudy
then Chance
Showers
 Showers

 Showers then
Chance
Showers
 Slight Chance
Showers then
Showers
Likely
 Slight Chance
T-storms and
Patchy Fog
 Partly Sunny
then Chance
T-storms
 Slight Chance
Showers

 Chance
Showers then
Chance
T-storms

 

Today
 
 Mostly sunny, with a high near 89. Calm wind.
Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight.
Saturday
 
 Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 88. Heat index values as high as 98. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
 Showers and thunderstorms before 10pm, then a chance of showers. Low around 68. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday
 
 A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday Night
 
 A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Patchy fog between 1am and 3am. Otherwise, partly cloudy, with a low around 67. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
 
 A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the morning.
Monday Night
 
 A 20 percent chance of showers before 1am. Partly cloudy, with a low around 67. North wind around 5 mph becoming calm.
Tuesday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 50%.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
Wednesday
 
 A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Wednesday Night
 
 Partly cloudy, with a low around 70.
Thursday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Watertown TN.