Knoxville, TN Weather & Growing Conditions
Today
93°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 93. Heat index values as high as 102. Northeast wind around 0 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 19% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph NE | 19% |
| Sunday | 92°F | Sunny | 0 to 5 mph SW | 9% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 22% |
| Monday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 30% |
| Monday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph NE | 65% |
| Tuesday | 86°F | Showers And Thunderstorms | 0 mph | 86% |
| Tuesday Night | 66°F | Showers And Thunderstorms | 0 mph | 86% |
| Wednesday | 81°F | Showers And Thunderstorms | 0 mph | 77% |
| Wednesday Night | 63°F | Showers And Thunderstorms | 0 mph | 77% |
| Thursday | 79°F | Chance Rain Showers | 0 to 5 mph N | 37% |
| Thursday Night | 60°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 25% |
| Friday | 78°F | Slight Chance Rain Showers | 0 to 5 mph NE | 16% |
| Friday Night | 58°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph NE | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Knoxville, TN
Last spring frost
Apr 1
First fall frost
Nov 2
Growing season
215 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 Mcghee Tyson Ap, Tn (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.