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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.