Harrisburg, AR Weather & Growing Conditions
This Afternoon
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 101. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Sunny | 5 mph SW | 0% |
| Tonight | 73°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Sunday | 99°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
| Sunday Night | 74°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Monday | 96°F | Mostly Sunny | 0 to 5 mph WNW | 14% |
| Monday Night | 69°F | Partly Cloudy | 5 mph N | 14% |
| Tuesday | 88°F | Mostly Sunny | 5 to 10 mph N | 6% |
| Tuesday Night | 63°F | Mostly Clear | 5 to 10 mph NNE | 5% |
| Wednesday | 84°F | Sunny | 5 to 10 mph NNE | 1% |
| Wednesday Night | 60°F | Mostly Clear | 5 mph NNE | 0% |
| Thursday | 84°F | Sunny | 5 to 10 mph NNE | 1% |
| Thursday Night | 61°F | Mostly Clear | 5 to 10 mph NE | 1% |
| Friday | 86°F | Mostly Sunny | 5 to 10 mph NNE | 1% |
| Friday Night | 64°F | Partly Cloudy | 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harrisburg, AR
Last spring frost
Mar 28
First fall frost
Nov 7
Growing season
224 days
Hardiness zone
8a
Explore more for Harrisburg, AR: full frost dates · planting calendar · Arkansas frost dates
Climate data from the nearest NOAA station, Poinsett Sp, Ar (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.