| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 7:21 pm CDT Aug 31, 2026 | ||||||||||||||||||
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| Overnight |
Clear, with a low around 72. Calm wind. |
| Tuesday |
Sunny, with a high near 95. Heat index values as high as 101. Calm wind. |
| Tuesday Night |
Mostly clear, with a low around 73. Calm wind. |
| Wednesday |
Sunny, with a high near 96. Heat index values as high as 104. Calm wind. |
| Wednesday Night |
Clear, with a low around 74. Calm wind. |
| Thursday |
Sunny, with a high near 96. Calm wind. |
| Thursday Night |
A 20 percent chance of showers before 1am. 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. Calm wind becoming north around 5 mph. |
| Friday Night |
Mostly clear, with a low around 72. Calm wind. |
| Saturday |
Sunny, with a high near 94. |
| Saturday Night |
Mostly clear, with a low around 69. |
| Sunday |
Mostly sunny, with a high near 91. |
| Sunday Night |
Partly cloudy, with a low around 67. |
| Labor Day |
Sunny, with a high near 90. |
Forecast from NOAA-NWS for Watertown TN.