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Sullivan County, TN Weather Forecast
Sullivan County, TN Weather Forecast Date: 228 AM EDT Sun Aug 30 2026
The area/counties/county of: Sullivan, including the cities of: Kingsport, Bristol Tn, and South Holston Dam.or toggle through each period.
Rest of Tonight... Mostly clear. Lows in the mid 60s. Light winds.
Sunday... Sunny. Highs in the mid to upper 80s. Light winds.
Sunday Night... Mostly clear. Lows in the upper 60s. Light winds.
Monday... Sunny. Highs in the mid to upper 80s. Light winds.
Monday Night... Mostly clear. Lows in the upper 60s. Light winds.
Tuesday... Sunny. Highs in the upper 80s to lower 90s.
Tuesday Night... Mostly clear. Lows around 70.
Wednesday... Sunny. Highs in the upper 80s to lower 90s.
Wednesday Night... Mostly clear. Lows in the lower 70s.
Thursday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s to lower 90s. Chance of rain 20%.
Thursday Night... Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows around 70. Chance of rain 20%.
Friday... Mostly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid to upper 80s. Chance of rain 50%.
Friday Night... Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20%.
POP = Probability of Precipitation
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