| National Weather Service Forecast for:
Watertown TN Issued by: National Weather Service Nashville, TN |
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| Updated: 1:31 pm CDT Jul 18, 2026 | ||||||||||||||||||
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| Tonight |
A 30 percent chance of showers and thunderstorms, mainly between 3am and 4am. Partly cloudy, with a low around 72. West northwest wind around 5 mph becoming calm in the evening. |
| Sunday |
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Heat index values as high as 99. Calm wind becoming west northwest around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
| Sunday Night |
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog before 1am, then patchy fog after 2am. Otherwise, partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%. |
| Monday |
A 50 percent chance of showers and thunderstorms after 1pm. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 90. Heat index values as high as 99. Calm wind becoming west southwest around 5 mph. |
| Monday Night |
Partly cloudy, with a low around 73. Calm wind becoming south southwest around 5 mph. |
| Tuesday |
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. |
| Tuesday Night |
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South southwest wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 70%. |
| Wednesday |
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. North wind 5 to 10 mph. |
| Wednesday Night |
Mostly clear, with a low around 63. North wind 5 to 10 mph. |
| Thursday |
Sunny, with a high near 82. |
| Thursday Night |
Partly cloudy, with a low around 62. |
| Friday |
Mostly sunny, with a high near 86. |
| Friday Night |
Partly cloudy, with a low around 69. |
| Saturday |
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. |
Forecast from NOAA-NWS for Watertown TN.






