Harriman, TN Weather & Growing Conditions
This Afternoon
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 74 in the afternoon. South wind around 10 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Sunny | 10 mph S | 1% |
| Tonight | 62°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SE | 23% |
| Wednesday | 70°F | Showers And Thunderstorms | 5 to 10 mph S | 95% |
| Wednesday Night | 59°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph SW | 93% |
| Thursday | 73°F | Mostly Sunny | 0 mph | 9% |
| Thursday Night | 50°F | Partly Cloudy | 0 mph | 7% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NW | 3% |
| Friday Night | 45°F | Mostly Clear | 0 to 5 mph NW | 2% |
| Saturday | 64°F | Mostly Sunny | 0 to 5 mph N | 1% |
| Saturday Night | 39°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Sunday | 63°F | Mostly Sunny | 0 mph | 6% |
| Sunday Night | 37°F | Mostly Clear | 0 to 5 mph NW | 7% |
| Monday | 64°F | Sunny | 0 mph | 7% |
| Monday Night | 37°F | Mostly Clear | 0 mph | 4% |
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 Nov 3, 2026.