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Sullivan County, TN Weather Forecast
Sullivan County, TN Weather Forecast Date: 228 PM EDT Fri Oct 16 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 Today... Mostly sunny. A slight chance of showers this afternoon, then showers likely late. Highs in the upper 70s to lower 80s. Temperature falling to around 70 this afternoon. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70%.
Tonight... Showers until early morning, then a chance of showers late. Much cooler. Less humid with lows in the lower to mid 40s. Northwest winds 5 to 15 mph with gusts up to 25 mph. Chance of rain near 100%.
Saturday... Mostly sunny. A slight chance of showers in the morning. Much cooler with highs in the lower to mid 50s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20%.
Saturday Night... Mostly clear. Widespread frost after midnight. Lows in the mid 30s. Northeast winds 10 mph or less.
Sunday... Widespread frost in the morning. Sunny. Highs in the lower 60s. Northeast winds 10 mph or less.
Sunday Night... Mostly clear. Areas of frost after midnight. Lows in the mid to upper 30s.
Monday... Sunny. Highs in the lower to mid 60s.
Monday Night... Mostly clear. Lows around 40.
Tuesday... Sunny. Highs in the mid to upper 60s.
Tuesday Night... Mostly clear. Lows in the mid 40s.
Wednesday... Sunny. Highs in the upper 60s to lower 70s.
Wednesday Night... Mostly clear. Lows in the mid 40s.
POP = Probability of Precipitation
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