| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 10:46 pm CDT Aug 18, 2026 | ||||||||||||||||||
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| Tonight |
Mostly clear, with a low around 66. Calm wind. |
| Wednesday |
Increasing clouds, with a high near 91. Calm wind becoming north northwest around 5 mph. |
| Wednesday Night |
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 71. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
| Thursday |
Showers and thunderstorms likely before 2pm, then a slight chance of showers and thunderstorms after 5pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 87. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 60%. |
| Thursday Night |
Showers and thunderstorms likely before 1am, then a chance of showers. Patchy fog before midnight, then patchy fog after 1am. Otherwise, partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 70%. |
| Friday |
A slight chance of showers, with thunderstorms also possible after 1pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%. |
| Friday Night |
Patchy fog after 2am. Otherwise, mostly clear, with a low around 66. North wind around 5 mph becoming calm. |
| Saturday |
Areas of fog before 8am. Otherwise, sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon. |
| Saturday Night |
Mostly clear, with a low around 66. Northwest wind around 5 mph becoming calm. |
| Sunday |
Sunny, with a high near 87. |
| Sunday Night |
Mostly clear, with a low around 63. |
| Monday |
Mostly sunny, with a high near 87. |
| Monday Night |
Partly cloudy, with a low around 66. |
| Tuesday |
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. |
Forecast from NOAA-NWS for Watertown TN.


