Skip to main content.
National Weather Service Forecast for: Watertown TN
Issued by: National Weather Service Nashville, TN
Updated: 1:31 am CDT Oct 18, 2026
 
Overnight

Overnight: Clear, with a low around 36. Northeast wind around 5 mph.
Low: 36 °F		 Sunday

Sunday: Patchy frost before 8am. Otherwise, sunny, with a high near 69. East northeast wind around 5 mph becoming calm.
High: 69 °F		 Sunday
Night
Sunday Night: Patchy frost after 3am. Otherwise, clear, with a low around 39. Calm wind.
Low: 39 °F		 Monday

Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 71. Calm wind becoming north around 5 mph in the afternoon.
High: 71 °F		 Monday
Night
Monday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 39. North wind around 5 mph becoming calm.
Low: 39 °F		 Tuesday

Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 75. Calm wind becoming north northeast around 5 mph in the afternoon.
High: 75 °F		 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 41. North northeast wind around 5 mph becoming calm in the evening.
Low: 41 °F		 Wednesday

Wednesday: Patchy fog before 7am. Otherwise, sunny, with a high near 76. Calm wind becoming north around 5 mph in the afternoon.
High: 76 °F		 Wednesday
Night
Wednesday Night: Clear, with a low around 41. North northeast wind around 5 mph becoming calm.
Low: 41 °F
Clear
 Patchy Frost
then Sunny
 Clear then
Patchy Frost
 Areas Frost
then Sunny
 Clear then
Patchy Fog
 Patchy Fog
then Sunny
 Mostly Clear
 Patchy Fog
then Sunny
 Clear

 

Overnight
 
 Clear, with a low around 36. Northeast wind around 5 mph.
Sunday
 
 Patchy frost before 8am. Otherwise, sunny, with a high near 69. East northeast wind around 5 mph becoming calm.
Sunday Night
 
 Patchy frost after 3am. Otherwise, clear, with a low around 39. Calm wind.
Monday
 
 Areas of frost before 8am. Otherwise, sunny, with a high near 71. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 39. North wind around 5 mph becoming calm.
Tuesday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 75. Calm wind becoming north northeast around 5 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 41. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
 
 Patchy fog before 7am. Otherwise, sunny, with a high near 76. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
 
 Clear, with a low around 41. North northeast wind around 5 mph becoming calm.
Thursday
 
 Sunny, with a high near 74.
Thursday Night
 
 Clear, with a low around 42.
Friday
 
 Sunny, with a high near 74.
Friday Night
 
 Clear, with a low around 42.
Saturday
 
 Sunny, with a high near 77.

 

Forecast from NOAA-NWS for Watertown TN.