Knoxville, TN Weather & Growing Conditions
This Afternoon
94°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 94. Heat index values as high as 96. Northeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 94°F | Chance Showers And Thunderstorms | 5 mph NE | 25% |
| Tonight | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 26% |
| Sunday | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 17% |
| Sunday Night | 70°F | Partly Cloudy | 0 mph | 14% |
| Monday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 42% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph NE | 58% |
| Tuesday | 88°F | Showers And Thunderstorms | 0 mph | 79% |
| Tuesday Night | 67°F | Showers And Thunderstorms | 0 to 5 mph NE | 79% |
| Wednesday | 82°F | Showers And Thunderstorms | 0 to 5 mph W | 87% |
| Wednesday Night | 64°F | Showers And Thunderstorms | 0 to 5 mph NW | 87% |
| Thursday | 79°F | Chance Rain Showers | 0 to 5 mph NW | 50% |
| Thursday Night | 61°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph N | 35% |
| Friday | 79°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 17% |
| Friday Night | 58°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph N | 17% |
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 (7.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.