| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 1:31 am CDT Aug 12, 2026 | ||||||||||||||||||
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| Overnight |
A slight chance of showers before 4am, then a slight chance of showers after 5am. Partly cloudy, with a low around 73. South wind around 5 mph. Chance of precipitation is 20%. |
| Wednesday |
A 50 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 93. Heat index values as high as 103. Southwest wind 5 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
| Wednesday Night |
A 30 percent chance of showers and thunderstorms, mainly between 2am and 3am. Mostly cloudy, with a low around 74. West southwest wind around 5 mph becoming south after midnight. |
| Thursday |
A 20 percent chance of showers between 9am and 1pm. Partly sunny, with a high near 94. Heat index values as high as 105. Southwest wind 5 to 10 mph. |
| Thursday Night |
Partly cloudy, with a low around 76. South southwest wind around 5 mph. |
| Friday |
Mostly sunny and hot, with a high near 97. West southwest wind around 5 mph. |
| Friday Night |
Mostly clear, with a low around 75. Calm wind. |
| Saturday |
Sunny and hot, with a high near 97. Calm wind becoming west around 5 mph. |
| Saturday Night |
Mostly clear, with a low around 76. Calm wind. |
| Sunday |
Sunny and hot, with a high near 99. |
| Sunday Night |
Mostly clear, with a low around 75. |
| Monday |
Sunny and hot, with a high near 97. |
| Monday Night |
Partly cloudy, with a low around 72. |
| Tuesday |
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92. |
Forecast from NOAA-NWS for Watertown TN.