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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
Partly Cloudy
Partly cloudy, with a low around 66. Wind around 0 mph. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Johnson City

WhenTempForecastWindPrecip
Overnight 66°F Partly Cloudy 0 mph 5%
Saturday 90°F Mostly Sunny then Slight Chance Showers And Thunderstorms 0 mph 20%
Saturday Night 66°F Chance Showers And Thunderstorms 0 to 5 mph SE 31%
Sunday 88°F Slight Chance Showers And Thunderstorms 0 to 5 mph SW 58%
Sunday Night 65°F Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms 0 to 5 mph SE 58%
Monday 89°F Mostly Sunny then Showers And Thunderstorms Likely 0 to 5 mph SW 57%
Monday Night 65°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 0 to 5 mph SE 57%
Tuesday 84°F Showers And Thunderstorms 0 to 5 mph S 81%
Tuesday Night 62°F Showers And Thunderstorms 5 mph SE 81%
Wednesday 78°F Showers And Thunderstorms Likely 5 mph SE 59%
Wednesday Night 59°F Showers And Thunderstorms Likely 5 to 10 mph E 59%
Thursday 76°F Chance Rain Showers 0 to 5 mph N 32%
Thursday Night 56°F Chance Rain Showers then Mostly Cloudy 0 to 5 mph NE 29%
Friday 77°F Partly Sunny then 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

Nearby towns & communities

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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.