| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 1:31 am CDT Sep 20, 2026 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 71. South southwest wind around 5 mph. |
| Sunday |
Sunny, with a high near 95. Heat index values as high as 101. South wind around 5 mph becoming west in the afternoon. |
| Sunday Night |
Partly cloudy, with a low around 71. Calm wind becoming south southwest around 5 mph after midnight. |
| Monday |
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 99. South southwest wind around 5 mph becoming west northwest in the afternoon. |
| Monday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Northwest wind around 5 mph becoming calm. Chance of precipitation is 30%. |
| Tuesday |
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 88. Light north wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 50%. |
| Tuesday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. North wind around 5 mph. Chance of precipitation is 40%. |
| Wednesday |
A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 80. North wind 5 to 10 mph. |
| Wednesday Night |
Partly cloudy, with a low around 59. North wind around 5 mph becoming calm in the evening. |
| Thursday |
Mostly sunny, with a high near 79. |
| Thursday Night |
Partly cloudy, with a low around 57. |
| Friday |
Mostly sunny, with a high near 79. |
| Friday Night |
Mostly clear, with a low around 54. |
| Saturday |
Mostly sunny, with a high near 79. |
Forecast from NOAA-NWS for Watertown TN.





