Fall Branch, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fall Branch, a community in Washington County, Tennessee.
Tonight
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. Southeast wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fall Branch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Chance Showers And Thunderstorms | 0 mph | 39% |
| Saturday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 20% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SE | 26% |
| Sunday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 53% |
| Monday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 52% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 52% |
| Tuesday | 82°F | Showers And Thunderstorms | 0 to 5 mph S | 82% |
| Tuesday Night | 62°F | Showers And Thunderstorms | 5 mph E | 82% |
| Wednesday | 76°F | Showers And Thunderstorms Likely | 5 mph SE | 62% |
| Wednesday Night | 59°F | Showers And Thunderstorms Likely | 5 mph E | 62% |
| Thursday | 74°F | Chance Rain Showers | 0 to 5 mph NE | 34% |
| Thursday Night | 56°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph N | 23% |
| Friday | 75°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 17% |
Forecast source: National Weather Service (api.weather.gov) for Fall Branch (36.416, -82.624). Updated through the day.
Growing snapshot for Fall Branch
Last spring frost
Apr 9
First fall frost
Oct 29
Growing season
203 days
Hardiness zone
7a
More local growing data for Fall Branch: nearby ZIP 37656 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kingsport, Tn (10.1 mi from Fall Branch). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.