Harman US

Knoxville, AR Weather & Growing Conditions

Tonight
75°F
Mostly Clear
Mostly clear, with a low around 75. East southeast wind around 0 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 75°F Mostly Clear 0 mph 0%
Saturday 98°F Sunny 0 to 5 mph WSW 0%
Saturday Night 74°F Mostly Clear 0 to 5 mph S 0%
Sunday 97°F Mostly Sunny 0 to 5 mph SW 0%
Sunday Night 75°F Mostly Cloudy 0 to 5 mph E 10%
Monday 92°F Chance Showers And Thunderstorms 0 to 5 mph NNW 31%
Monday Night 71°F Chance Showers And Thunderstorms then Partly Cloudy 5 mph N 31%
Tuesday 88°F Mostly Sunny 5 mph NNE 13%
Tuesday Night 67°F Partly Cloudy 5 to 10 mph NE 5%
Wednesday 86°F Sunny 5 mph NE 4%
Wednesday Night 65°F Mostly Clear 5 mph ENE 4%
Thursday 86°F Sunny 5 mph ENE 2%
Thursday Night 66°F Mostly Clear 5 mph ENE 3%
Friday 85°F Mostly Sunny 5 mph ENE 3%

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.