Harrisburg, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harrisburg, a city in Poinsett County, Arkansas.
Overnight
75°F
Mostly Clear
Mostly clear, with a low around 75. Southwest wind around 0 mph.
7-day forecast for Harrisburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 75°F | Mostly Clear | 0 mph | 0% |
| Saturday | 101°F | Sunny | 0 to 5 mph WSW | 1% |
| Saturday Night | 75°F | Mostly Clear | 0 to 5 mph SSW | 0% |
| Sunday | 101°F | Sunny | 0 to 5 mph SW | 1% |
| Sunday Night | 75°F | Partly Cloudy | 0 to 5 mph NW | 1% |
| Monday | 98°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 15% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 mph N | 20% |
| Tuesday | 90°F | Mostly Sunny | 5 to 10 mph N | 12% |
| Tuesday Night | 63°F | Partly Cloudy | 5 to 10 mph NNE | 11% |
| Wednesday | 87°F | Sunny | 5 to 10 mph NNE | 6% |
| Wednesday Night | 62°F | Mostly Clear | 5 to 10 mph NNE | 3% |
| Thursday | 86°F | Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 63°F | Mostly Clear | 5 to 10 mph NNE | 3% |
| Friday | 86°F | Mostly Sunny | 5 to 10 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Harrisburg (35.564, -90.722). Updated through the day.
Growing snapshot for Harrisburg
Last spring frost
Mar 28
First fall frost
Nov 7
Growing season
224 days
Hardiness zone
8a
More local growing data for Harrisburg: nearby ZIP 72432 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Poinsett Sp, Ar (2.6 mi from Harrisburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.