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Johnson City, TN Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Johnson City, a city in Washington County, Tennessee.

Overnight
66°F
Areas Of Fog
Areas of fog. Partly cloudy, with a low around 66. Wind around 0 mph.

7-day forecast for Johnson City

WhenTempForecastWindPrecip
Overnight 66°F Areas Of Fog 0 mph 2%
Saturday 90°F Areas Of Fog then Slight Chance Showers And Thunderstorms 0 mph 20%
Saturday Night 66°F Slight Chance Showers And Thunderstorms 0 to 5 mph E 22%
Sunday 88°F Mostly Sunny then Chance Showers And Thunderstorms 0 to 5 mph S 27%
Sunday Night 65°F Chance Showers And Thunderstorms 0 to 5 mph S 42%
Monday 88°F Mostly Sunny then Chance Showers And Thunderstorms 0 to 5 mph W 51%
Monday Night 64°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 0 to 5 mph E 61%
Tuesday 83°F Showers And Thunderstorms 0 to 5 mph S 86%
Tuesday Night 61°F Showers And Thunderstorms 5 mph SE 86%
Wednesday 76°F Showers And Thunderstorms Likely 5 mph SE 65%
Wednesday Night 58°F Showers And Thunderstorms Likely 0 to 10 mph SE 65%
Thursday 77°F Chance Rain Showers 0 to 5 mph NE 40%
Thursday Night 56°F Chance Showers And Thunderstorms 0 to 5 mph NE 39%
Friday 75°F Slight Chance Rain Showers 0 to 5 mph N 21%

Forecast source: National Weather Service (api.weather.gov) for Johnson City (36.342, -82.381). Updated through the day.

Growing snapshot for Johnson City

Last spring frost
Apr 19
First fall frost
Oct 24
Growing season
187 days
Hardiness zone
7b

More local growing data for Johnson City: nearby ZIP 37604 weather · frost dates · planting calendar · Tennessee frost dates

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Climate data from the nearest NOAA station, Elizabethton, Tn (8.4 mi from Johnson City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.