| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 1:31 am CDT Aug 13, 2026 | ||||||||||||||||||
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| Overnight |
A slight chance of showers, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 73. South southwest wind around 5 mph. Chance of precipitation is 30%. |
| Thursday |
A chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 105. West southwest wind around 5 mph. Chance of precipitation is 30%. |
| Thursday Night |
Partly cloudy, with a low around 75. South southwest wind around 5 mph. |
| Friday |
Sunny, with a high near 96. Heat index values as high as 107. Southwest wind around 5 mph. |
| Friday Night |
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. Calm wind. |
| Saturday |
Sunny and hot, with a high near 97. Calm wind becoming southwest around 5 mph. |
| Saturday Night |
Mostly clear, with a low around 74. Calm wind. |
| Sunday |
Sunny and hot, with a high near 98. West southwest wind around 5 mph. |
| Sunday Night |
Mostly clear, with a low around 75. Calm wind becoming south southwest around 5 mph. |
| Monday |
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. |
| Monday Night |
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. |
| Tuesday |
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. |
| Tuesday Night |
Mostly clear, with a low around 71. |
| Wednesday |
Sunny, with a high near 92. |
Forecast from NOAA-NWS for Watertown TN.