| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 1:31 pm CDT Sep 4, 2026 | ||||||||||||||||||
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| Tonight |
Mostly clear, with a low around 74. Calm wind. |
| Saturday |
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Heat index values as high as 106. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 30%. |
| Saturday Night |
Mostly clear, with a low around 72. Calm wind. |
| Sunday |
Sunny, with a high near 93. Heat index values as high as 100. Light north wind increasing to 5 to 10 mph in the morning. |
| Sunday Night |
Mostly clear, with a low around 65. Northeast wind 5 to 10 mph. |
| Labor Day |
Sunny, with a high near 91. East northeast wind around 5 mph. |
| Monday Night |
A 20 percent chance of showers before 1am. Mostly clear, with a low around 69. East wind around 5 mph becoming south southeast after midnight. |
| Tuesday |
Sunny, with a high near 92. South wind 5 to 10 mph. |
| Tuesday Night |
Mostly clear, with a low around 70. South southeast wind around 5 mph. |
| Wednesday |
Sunny, with a high near 93. |
| Wednesday Night |
Mostly clear, with a low around 71. |
| Thursday |
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94. |
| Thursday Night |
Partly cloudy, with a low around 68. |
| Friday |
A 20 percent chance of showers. Sunny, with a high near 91. |
Forecast from NOAA-NWS for Watertown TN.