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Fall Branch, TN Weather Forecast
Fall Branch, TN Weather Forecast Date: 228 PM EDT Tue Oct 13 2026
The area/counties/county of: Washington County Tn, including the city of Johnson City.or toggle through each period.
Rest of Today... Sunny. Highs in the lower to mid 80s. West winds 10 mph or less.
Tonight... Clear. Lows in the upper 50s. Light winds.
Wednesday... Sunny. Highs in the lower to mid 80s. Light winds.
Wednesday Night... Partly cloudy. Lows in the lower 60s. Light winds.
Thursday... Mostly sunny. Highs in the lower to mid 80s. Light winds.
Thursday Night... Mostly clear. Lows in the lower 60s.
Friday... Mostly sunny. A slight chance of showers in the morning, then showers likely in the afternoon. Highs in the mid to upper 70s. Temperature falling into the lower 60s in the afternoon. Chance of rain 70%.
Friday Night... Partly cloudy. A slight chance of showers in the evening. Much cooler with lows in the lower 40s. Chance of rain 20%.
Saturday... Sunny, cooler with highs in the mid to upper 50s.
Saturday Night... Clear. Lows in the mid 30s.
Sunday... Sunny. Highs in the mid to upper 60s.
Sunday Night... Mostly clear. Lows in the upper 30s.
POP = Probability of Precipitation
Fall Branch Radar Loop
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