Knoxville, AR Weather & Growing Conditions
Today
96°F
Sunny
Sunny, with a high near 96. Heat index values as high as 100. East southeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Sunny | 0 to 5 mph ESE | 0% |
| Tonight | 75°F | Mostly Clear | 5 mph ESE | 0% |
| Wednesday | 98°F | Sunny | 0 to 5 mph ESE | 3% |
| Wednesday Night | 77°F | Partly Cloudy | 0 to 5 mph SE | 4% |
| Thursday | 98°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 15% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 26% |
| Friday | 94°F | Chance Showers And Thunderstorms | 0 to 5 mph ESE | 44% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 0 to 5 mph ESE | 44% |
| Saturday | 94°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 23% |
| Saturday Night | 76°F | Mostly Clear | 0 to 5 mph SE | 10% |
| Sunday | 96°F | Sunny | 0 to 5 mph SSE | 7% |
| Sunday Night | 77°F | Mostly Clear | 0 to 5 mph SE | 7% |
| Monday | 96°F | Sunny | 0 to 5 mph SSE | 9% |
| Monday Night | 77°F | Mostly Clear | 0 to 5 mph SE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Knoxville, AR
Last spring frost
Mar 24
First fall frost
Nov 10
Growing season
233 days
Hardiness zone
8a
Explore more for Knoxville, AR: full frost dates · planting calendar · Arkansas frost dates
Climate data from the nearest NOAA station, Clarksville 2N, Ar (10.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.