| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 11:36 pm CDT Sep 1, 2026 | ||||||||||||||||||
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| Overnight |
Clear, with a low around 73. Calm wind. |
| Wednesday |
Sunny and hot, with a high near 98. Heat index values as high as 105. Calm wind. |
| Wednesday Night |
Clear, with a low around 74. Calm wind. |
| Thursday |
Sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind. |
| Thursday Night |
Mostly clear, with a low around 74. Calm wind. |
| Friday |
Sunny and hot, with a high near 97. Calm wind becoming northeast around 5 mph. |
| Friday Night |
Mostly clear, with a low around 72. Calm wind. |
| Saturday |
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Calm wind becoming north around 5 mph in the afternoon. |
| Saturday Night |
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 69. Calm wind. |
| Sunday |
Sunny, with a high near 93. |
| Sunday Night |
Partly cloudy, with a low around 68. |
| Labor Day |
Mostly sunny, with a high near 92. |
| Monday Night |
Mostly clear, with a low around 68. |
| Tuesday |
Mostly sunny, with a high near 91. |
Forecast from NOAA-NWS for Watertown TN.