Johnson City, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Johnson City, a city in Washington County, Tennessee.
This Afternoon
77°F
Sunny
Sunny. High near 77, with temperatures falling to around 73 in the afternoon. Southeast wind around 10 mph.
7-day forecast for Johnson City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 10 mph SE | 1% |
| Tonight | 58°F | Partly Cloudy | 5 to 10 mph E | 3% |
| Wednesday | 72°F | Showers And Thunderstorms | 5 to 10 mph SE | 78% |
| Wednesday Night | 60°F | Showers And Thunderstorms | 0 to 5 mph S | 92% |
| Thursday | 74°F | Chance Rain Showers | 0 to 5 mph SW | 35% |
| Thursday Night | 54°F | Chance Rain Showers | 0 mph | 31% |
| Friday | 70°F | Chance Rain Showers | 0 to 5 mph NW | 29% |
| Friday Night | 45°F | Partly Cloudy | 0 to 5 mph NW | 12% |
| Saturday | 63°F | Partly Sunny | 0 to 5 mph NW | 12% |
| Saturday Night | 36°F | Partly Cloudy | 0 mph | 4% |
| Sunday | 62°F | Partly Sunny | 0 to 5 mph W | 5% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 14% |
| Monday | 61°F | Slight Chance Rain Showers | 0 to 10 mph NW | 17% |
| Monday Night | 33°F | Slight Chance Rain Showers then Mostly Clear | 0 to 5 mph W | 16% |
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 Nov 3, 2026.