Jonesborough, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jonesborough, a town in Washington County, Tennessee.
Today
85°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between noon and 2pm, then showers and thunderstorms likely between 2pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 85, with temperatures falling to around 79 in the afternoon. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Jonesborough
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 59% |
| Tonight | 66°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph SE | 56% |
| Wednesday | 84°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 60% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 53% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 61% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely then Mostly Cloudy | 0 to 5 mph S | 61% |
| Friday | 85°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 52% |
| Friday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 52% |
| Saturday | 84°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph SW | 67% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 67% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 40% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 40% |
| Monday | 85°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SW | 37% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 37% |
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 Aug 4, 2026.