Knoxville, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knoxville, a city in Knox County, Tennessee.
This Afternoon
72°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 72, with temperatures falling to around 69 in the afternoon. Southwest wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Knoxville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Showers And Thunderstorms | 5 mph SW | 92% |
| Tonight | 62°F | Showers And Thunderstorms | 0 to 5 mph SW | 99% |
| Thursday | 71°F | Partly Sunny | 0 to 5 mph W | 2% |
| Thursday Night | 50°F | Partly Cloudy | 0 mph | 0% |
| Friday | 69°F | Sunny | 0 to 5 mph N | 1% |
| Friday Night | 45°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 59°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 37°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Sunday | 61°F | Mostly Sunny | 0 mph | 0% |
| Sunday Night | 37°F | Mostly Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 mph | 0% |
| Monday Night | 38°F | Mostly Clear | 0 mph | 3% |
| Tuesday | 65°F | Mostly Sunny | 0 mph | 3% |
| Tuesday Night | 41°F | Partly Cloudy | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Knoxville (35.971, -83.949). Updated through the day.
Growing snapshot for Knoxville
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
7b
More local growing data for Knoxville: nearby ZIP 37916 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Knoxville Exp Stn, Tn (4 mi from Knoxville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.