| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 7:06 pm CDT Aug 30, 2026 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 72. South wind around 5 mph becoming calm. |
| Monday |
Mostly sunny, with a high near 93. Heat index values as high as 100. Calm wind becoming southwest around 5 mph. |
| Monday Night |
Mostly clear, with a low around 72. South southeast wind around 5 mph becoming calm. |
| Tuesday |
Sunny, with a high near 95. Heat index values as high as 102. Calm wind. |
| Tuesday Night |
Mostly clear, with a low around 74. Calm wind. |
| Wednesday |
Sunny, with a high near 95. Calm wind. |
| Wednesday Night |
Mostly clear, with a low around 74. Calm wind. |
| Thursday |
Sunny, with a high near 96. Calm wind. |
| Thursday Night |
Mostly clear, with a low around 74. Calm wind. |
| Friday |
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. |
| Friday Night |
Partly cloudy, with a low around 72. |
| Saturday |
Sunny, with a high near 93. |
| Saturday Night |
Mostly clear, with a low around 68. |
| Sunday |
Sunny, with a high near 91. |
Forecast from NOAA-NWS for Watertown TN.