Johnson City, TN Weather & Growing Conditions
Today
86°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 86, with temperatures falling to around 80 in the afternoon. East wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 54% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 58% |
| Wednesday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 52% |
| Thursday | 85°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 55% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely then Mostly Cloudy | 0 to 5 mph S | 55% |
| Friday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 45% |
| Friday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Saturday | 86°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 63% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 63% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 34% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 34% |
| Monday | 86°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 34% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Johnson City, TN
Last spring frost
Apr 16
First fall frost
Oct 24
Growing season
190 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, Bristol Tri City Ap, Tn (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.