Johnson City, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Johnson City, a city in Washington County, Tennessee.
Today
87°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between noon and 2pm, then showers and thunderstorms likely between 2pm and 5pm, then showers and thunderstorms likely. Mostly sunny. High near 87, with temperatures falling to around 82 in the afternoon. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Johnson City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 59% |
| Tonight | 66°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph E | 56% |
| Wednesday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 61% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 54% |
| Thursday | 86°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 64% |
| Thursday Night | 67°F | Showers And Thunderstorms Likely then Mostly Cloudy | 0 to 5 mph S | 64% |
| Friday | 87°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 52% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 52% |
| Saturday | 87°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 69% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 69% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 38% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 38% |
| Monday | 88°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph NW | 38% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 38% |
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
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 Aug 4, 2026.