| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 1:31 am CDT Sep 4, 2026 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 74. Calm wind. |
| Friday |
A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind. |
| Friday Night |
Mostly clear, with a low around 74. Calm wind. |
| Saturday |
A slight chance of showers and thunderstorms between 2pm and 4pm. Sunny and hot, with a high near 97. Heat index values as high as 106. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%. |
| Saturday Night |
Mostly clear, with a low around 71. Calm wind. |
| Sunday |
Patchy fog before 7am. Otherwise, sunny, with a high near 93. Light north wind increasing to 5 to 10 mph in the afternoon. |
| Sunday Night |
Mostly clear, with a low around 67. Northeast wind 5 to 10 mph. |
| Labor Day |
Sunny, with a high near 91. East northeast wind around 5 mph. |
| Monday Night |
Mostly clear, with a low around 69. East wind around 5 mph becoming south southeast after midnight. |
| Tuesday |
Sunny, with a high near 92. |
| Tuesday Night |
Mostly clear, with a low around 70. |
| Wednesday |
Sunny, with a high near 93. |
| Wednesday Night |
Mostly clear, with a low around 72. |
| Thursday |
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94. |
Forecast from NOAA-NWS for Watertown TN.