Harriman, TN Weather & Growing Conditions
Tonight
70°F
Isolated Showers And Thunderstorms then Partly Cloudy
Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 70. Wind around 0 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Isolated Showers And Thunderstorms then Partly Cloudy | 0 mph | 17% |
| Saturday | 94°F | Sunny then Chance Showers And Thunderstorms | 0 mph | 40% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 37% |
| Sunday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 21% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 mph | 26% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 49% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 mph | 49% |
| Tuesday | 85°F | Showers And Thunderstorms | 0 mph | 76% |
| Tuesday Night | 65°F | Showers And Thunderstorms | 0 mph | 76% |
| Wednesday | 82°F | Showers And Thunderstorms Likely | 0 mph | 60% |
| Wednesday Night | 62°F | Showers And Thunderstorms Likely | 0 mph | 60% |
| Thursday | 78°F | Chance Rain Showers | 0 to 5 mph N | 30% |
| Thursday Night | 59°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 30% |
| Friday | 78°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harriman, TN
Last spring frost
Apr 3
First fall frost
Nov 4
Growing season
215 days
Hardiness zone
7b
Explore more for Harriman, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Kingston, Tn (6.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.