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Washington County, TN Weather Forecast
Washington County, TN Weather Forecast Date: 706 AM EDT Tue Aug 25 2026
The area/counties/county of: Washington County Tn, including the city of Johnson City.or toggle through each period.
Today... Sunny. Highs in the lower to mid 80s. Light winds.
Tonight... Mostly clear. Lows in the lower 60s. Light winds.
Wednesday... Mostly sunny. A slight chance of showers and thunderstorms early in the afternoon. A chance of showers and thunderstorms late. Highs in the mid to upper 80s. Light winds. Chance of rain 50%.
Wednesday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 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. Light winds. Chance of rain 50%.
Thursday Night... Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 20%.
Friday... Partly 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%.
Friday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s.
Saturday... Mostly sunny. A slight chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the mid to upper 80s. Chance of rain 20%.
Saturday Night... Mostly clear. Lows in the mid 60s.
Sunday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid to upper 80s. Chance of rain 20%.
Sunday Night... Partly cloudy in the evening, then clearing. Lows in the upper 60s.
POP = Probability of Precipitation
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