Johnson City, TN Weather & Growing Conditions
Tonight
66°F
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms before 1am. Mostly cloudy, with a low around 66. Southeast wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Scattered Showers And Thunderstorms | 0 to 5 mph SE | 47% |
| Saturday | 89°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 | 29% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 55% |
| Sunday Night | 64°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 55% |
| Monday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 53% |
| Tuesday | 83°F | Showers And Thunderstorms | 0 to 5 mph S | 81% |
| Tuesday Night | 62°F | Showers And Thunderstorms | 5 mph E | 81% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 5 mph SE | 60% |
| Wednesday Night | 58°F | Showers And Thunderstorms Likely | 5 to 10 mph E | 60% |
| Thursday | 75°F | Chance Rain Showers | 0 to 5 mph NE | 33% |
| Thursday Night | 56°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph NE | 26% |
| Friday | 76°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 19% |
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 (5.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.