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National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 am CDT Jul 22, 2026
 
Overnight

Overnight: A chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 72 °F		 Wednesday

Wednesday: A 20 percent chance of showers between noon and 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.
High: 86 °F		 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 64. North northeast wind 5 to 10 mph.
Low: 64 °F		 Thursday

Thursday: Sunny, with a high near 83. Northeast wind 5 to 10 mph.
High: 83 °F		 Thursday
Night
Thursday Night: Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Low: 63 °F		 Friday

Friday: Mostly sunny, with a high near 85. Calm wind becoming north northwest around 5 mph in the afternoon.
High: 85 °F		 Friday
Night
Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. North wind around 5 mph becoming calm.
Low: 68 °F		 Saturday

Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
High: 86 °F		 Saturday
Night
Saturday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%.
Low: 70 °F
Chance
T-storms and
Patchy Fog
 Slight Chance
Showers and
Patchy Fog
 Partly Cloudy

 Sunny

 Partly Cloudy

 Mostly Sunny

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

Flood Watch
Flash Flood Warning
 

Overnight
 
 A chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 A 20 percent chance of showers between noon and 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.
Wednesday Night
 
 Partly cloudy, with a low around 64. North northeast wind 5 to 10 mph.
Thursday
 
 Sunny, with a high near 83. Northeast wind 5 to 10 mph.
Thursday Night
 
 Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Friday
 
 Mostly sunny, with a high near 85. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
 
 A 40 percent chance of showers and thunderstorms after 1am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. North wind around 5 mph becoming calm.
Saturday
 
 Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
 
 A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%.
Sunday
 
 Mostly sunny, with a high near 91.
Sunday Night
 
 Mostly clear, with a low around 72.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Monday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Tuesday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

 

Forecast from NOAA-NWS for Watertown TN.