| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 11:06 am CDT Sep 14, 2026 | ||||||||||||||||||
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| This Afternoon |
Sunny, with a high near 91. Heat index values as high as 97. Northeast wind around 5 mph. |
| Tonight |
Mostly clear, with a low around 68. Northeast wind around 5 mph becoming calm after midnight. |
| Tuesday |
Sunny and hot, with a high near 97. Heat index values as high as 103. South wind around 5 mph. |
| Tuesday Night |
Mostly clear, with a low around 73. South wind around 5 mph. |
| Wednesday |
Sunny, with a high near 95. South wind around 5 mph becoming calm in the afternoon. |
| Wednesday Night |
Mostly clear, with a low around 70. Calm wind. |
| Thursday |
Sunny, with a high near 95. Calm wind becoming southwest around 5 mph. |
| Thursday Night |
Mostly clear, with a low around 70. Calm wind. |
| Friday |
Sunny, with a high near 95. Calm wind becoming north northeast around 5 mph in the afternoon. |
| Friday Night |
Mostly clear, with a low around 68. |
| Saturday |
Sunny, with a high near 94. |
| Saturday Night |
Partly cloudy, with a low around 69. |
| Sunday |
Sunny, with a high near 92. |
Forecast from NOAA-NWS for Watertown TN.