Powell, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Powell, a community in Knox County, Tennessee.
Overnight
69°F
Partly Cloudy
Partly cloudy, with a low around 69. Northeast wind around 0 mph. Chance of precipitation is 20%.
7-day forecast for Powell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Partly Cloudy | 0 mph | 22% |
| Saturday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph N | 31% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 30% |
| Sunday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 24% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 mph | 28% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 45% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 mph | 49% |
| Tuesday | 86°F | Showers And Thunderstorms Likely | 0 mph | 72% |
| Tuesday Night | 66°F | Showers And Thunderstorms Likely | 0 mph | 72% |
| Wednesday | 82°F | Rain Showers Likely | 0 to 5 mph NW | 65% |
| Wednesday Night | 62°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 65% |
| Thursday | 78°F | Chance Rain Showers | 0 to 5 mph N | 30% |
| Thursday Night | 60°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 30% |
| Friday | 78°F | Mostly Sunny | 5 mph N | 11% |
Forecast source: National Weather Service (api.weather.gov) for Powell (36.036, -84.030). Updated through the day.
Growing snapshot for Powell
Last spring frost
Mar 31
First fall frost
Nov 4
Growing season
218 days
Hardiness zone
7b
More local growing data for Powell: nearby ZIP 37849 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Oak Ridge Asos, Tn (10.8 mi from Powell). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.