Jonesborough, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jonesborough, a town in Washington County, Tennessee.
Tonight
66°F
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms before 1am. Partly 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 for Jonesborough
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Scattered Showers And Thunderstorms | 0 to 5 mph SE | 51% |
| Saturday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 19% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 29% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 57% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 57% |
| Monday | 86°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph SW | 55% |
| Monday Night | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph SE | 55% |
| Tuesday | 82°F | Showers And Thunderstorms | 0 to 5 mph S | 81% |
| Tuesday Night | 63°F | Showers And Thunderstorms | 5 mph SE | 81% |
| Wednesday | 76°F | Rain Showers Likely | 5 mph SE | 60% |
| Wednesday Night | 59°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 60% |
| Thursday | 74°F | Chance Rain Showers | 0 to 5 mph N | 33% |
| Thursday Night | 56°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph NE | 28% |
| Friday | 75°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 21% |
Forecast source: National Weather Service (api.weather.gov) for Jonesborough (36.296, -82.476). Updated through the day.
Growing snapshot for Jonesborough
Last spring frost
Apr 21
First fall frost
Oct 23
Growing season
183 days
Hardiness zone
7a
More local growing data for Jonesborough: nearby ZIP 37659 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Erwin 1 W, Tn (10.5 mi from Jonesborough). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.