| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 6:21 am CDT Sep 17, 2026 | ||||||||||||||||||
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| This Afternoon |
Sunny and hot, with a high near 97. Heat index values as high as 104. West northwest wind around 5 mph becoming north. |
| Tonight |
Mostly clear, with a low around 72. Calm wind. |
| Friday |
Sunny and hot, with a high near 97. Heat index values as high as 104. Calm wind becoming north northwest around 5 mph in the afternoon. |
| Friday Night |
Partly cloudy, with a low around 71. Calm wind. |
| Saturday |
Sunny, with a high near 96. Calm wind becoming west around 5 mph. |
| Saturday Night |
Partly cloudy, with a low around 72. Calm wind becoming south around 5 mph after midnight. |
| Sunday |
Mostly sunny, with a high near 96. South wind around 5 mph becoming west in the afternoon. |
| Sunday Night |
Partly cloudy, with a low around 71. Calm wind becoming south southeast around 5 mph. |
| Monday |
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South wind around 5 mph becoming west northwest in the afternoon. |
| Monday Night |
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. |
| Tuesday |
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. |
| Tuesday Night |
A 30 percent chance of showers. Partly cloudy, with a low around 66. |
| Wednesday |
A 30 percent chance of showers. Mostly sunny, with a high near 87. |
Forecast from NOAA-NWS for Watertown TN.