Knoxville, TN Weather & Growing Conditions
Today
88°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny. High near 88, with temperatures falling to around 85 in the afternoon. North wind around 0 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 38% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 mph | 34% |
| Wednesday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 52% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 0 mph | 50% |
| Thursday | 87°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 51% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 51% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 38% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 38% |
| Saturday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 mph | 45% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 0 mph | 35% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 35% |
| Monday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 35% |
| Monday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Knoxville, TN
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
7b
Explore more for Knoxville, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Knoxville Exp Stn, Tn (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.