Johnson City, TN Weather & Growing Conditions
Today
87°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between noon and 1pm, then showers and thunderstorms likely between 1pm and 5pm, then showers and thunderstorms likely. Mostly sunny. High near 87, with temperatures falling to around 81 in the afternoon. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 60% |
| Tonight | 66°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph E | 55% |
| Wednesday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 61% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 54% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 67% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely then Mostly Cloudy | 0 to 5 mph S | 67% |
| Friday | 87°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 57% |
| Friday Night | 66°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 57% |
| Saturday | 87°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 72% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 72% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 40% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 40% |
| Monday | 87°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph NW | 40% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 40% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Johnson City, TN
Last spring frost
Apr 19
First fall frost
Oct 24
Growing season
187 days
Hardiness zone
7b
Explore more for Johnson City, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Elizabethton, Tn (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.