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Tva, TN Weather Forecast
Tva, TN Weather Forecast Date: 106 AM EDT Tue Aug 18 2026
The area/counties/county of: Washington County Tn, including the city of Johnson City.or toggle through each period.
Rest of Tonight... Mostly cloudy. Lows in the upper 60s. Light winds.
Tuesday... Mostly sunny. Highs in the lower to mid 80s. Light winds.
Tuesday Night... Partly cloudy. Lows in the mid 60s. Light winds.
Wednesday... Sunny. Highs in the mid to upper 80s. Light winds.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s. Light winds.
Thursday... Partly 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 40%.
Thursday Night... Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 40%.
Friday... Partly sunny. A chance of showers and thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the lower to mid 80s. Chance of rain 70%.
Friday Night... Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 60s. Chance of rain 40%.
Saturday... Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower to mid 80s. Chance of rain 50%.
Saturday Night... Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 30%.
Sunday... Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower to mid 80s. Chance of rain 20%.
Sunday Night... Mostly clear. Lows in the lower 60s.
POP = Probability of Precipitation
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