Harman US

Knoxville, AR Weather & Growing Conditions

Today
97°F
Sunny
Sunny, with a high near 97. Heat index values as high as 97. West southwest wind 0 to 5 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 97°F Sunny 0 to 5 mph WSW 0%
Tonight 74°F Mostly Clear 0 to 5 mph S 0%
Sunday 96°F Mostly Sunny 0 to 5 mph W 0%
Sunday Night 75°F Mostly Cloudy then Chance Showers And Thunderstorms 0 to 5 mph WNW 29%
Monday 91°F Chance Showers And Thunderstorms 0 to 5 mph NW 29%
Monday Night 71°F Chance Showers And Thunderstorms then Partly Cloudy 5 mph NNW 26%
Tuesday 85°F Mostly Sunny 5 mph NNE 14%
Tuesday Night 65°F Partly Cloudy 5 to 10 mph NE 7%
Wednesday 84°F Sunny 5 mph NE 1%
Wednesday Night 64°F Mostly Clear 5 mph ENE 0%
Thursday 84°F Mostly Sunny 5 mph ENE 1%
Thursday Night 65°F Partly Cloudy 5 mph ENE 1%
Friday 84°F Mostly Sunny 5 mph E 6%
Friday Night 65°F Partly Cloudy 5 mph ENE 6%

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 Sep 19, 2026.