Sullivan County, TN Weather Forecast
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Sullivan County Weather Forecast
| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
| Partly Cloudy | Mostly Sunny | Chance of Showers | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Chance of T-Storm | Mostly Clear | Chance of T-Storm |
| Lo: 60°FLo: 16°C | Hi: 83°FHi: 28°C | Lo: 69°FLo: 21°C | Hi: 83°FHi: 28°C | Lo: 69°FLo: 21°C | Hi: 83°FHi: 28°C | Lo: 69°FLo: 21°C | Hi: 83°FHi: 28°C | Lo: 65°FLo: 18°C | Hi: 83°FHi: 28°C | Lo: 65°FLo: 18°C | Hi: 87°FHi: 31°C |
| POP: 20% | POP: 40% | POP: 80% | POP: 50% | POP: 50% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 448 AM EDT Thu Sep 10 2026 

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Issued: 233 AM EDT Thu Sep 10 2026
Key Messages
Updated at 230 AM EDT Thu Sep 10 2026- Spotty showers are possible today and tonight mainly the northern Plateau into southwest Virginia. A few rumbles of thunder will be possible.
- Friday, Saturday and Sunday scattered showers and storms areawide, mainly in the afternoon and evening hours. Locally heavy rainfall is the main threat due to elevated PW values of around 2 inches.
- Above normal temperatures expected through the forecast period. If CHA hits 90 again today, they will tie the ...
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