| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 10:26 pm CDT Sep 17, 2026 | ||||||||||||||||||
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| Overnight |
Clear, with a low around 72. Calm wind. |
| Friday |
Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming north northwest around 5 mph in the afternoon. |
| Friday Night |
Partly cloudy, with a low around 70. Calm wind. |
| Saturday |
Sunny, with a high near 95. Heat index values as high as 103. Calm wind becoming northwest around 5 mph in the afternoon. |
| Saturday Night |
Mostly clear, with a low around 70. Calm wind becoming south around 5 mph. |
| Sunday |
Mostly sunny, with a high near 95. South wind around 5 mph becoming west southwest in the afternoon. |
| Sunday Night |
Partly cloudy, with a low around 70. Calm wind becoming south around 5 mph. |
| Monday |
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. South wind around 5 mph becoming west southwest in the afternoon. |
| Monday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. |
| Tuesday |
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 30%. |
| Tuesday Night |
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. |
| Wednesday |
A 20 percent chance of showers. Mostly sunny, with a high near 85. |
| Wednesday Night |
Partly cloudy, with a low around 61. |
| Thursday |
Mostly sunny, with a high near 84. |
Forecast from NOAA-NWS for Watertown TN.






