Johnson City Weather Forecast
- 63
- 84
Rain Showers
- 58
- 78
Rain Showers
- 54
- 75
Slight Chance Rain Showers
- 48
- 74
Mostly Sunny
- 48
- 74
Partly Sunny
- 50
- 76
Partly Sunny
Today 22 Sep Washington
A chance of Showers with a slight chance of Thunderstorms in the Morning, then Showers with a chance of Thunderstorms in the afternoon. Highs in the lower 80s. Temperature falling into the lower 70s in the afternoon. Light Winds. Chance of rain 80 percent.
Tonight 22 Sep Washington
Mostly cloudy with Showers likely with a slight chance of Thunderstorms in the Evening, then mostly cloudy with a chance of Showers after midnight. Lows in the mid 60s. Light Winds. Chance of rain 70 percent.
Johnson City Temperature Statistics
September Temperature
Elizabethton Municipal Airport (10.6 miles)
Lowest 8 September, 2026
62.6 °FAverage September
75.3 °FHighest 3 September, 2026
95 °F
Climate (2021–2026)
Elizabethton Municipal Airport (10.6 miles)
Average Low 2021–2026
47.1 °FAverage 2021–2026
57.3 °FAverage High 2021–2026
68.8 °F