Portland, AR Weather & Growing Conditions
Tonight
72°F
Clear
Clear, with a low around 72. Heat index values as high as 98. South southwest wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Clear | 0 mph | 0% |
| Saturday | 101°F | Sunny | 0 to 5 mph WSW | 1% |
| Saturday Night | 73°F | Clear | 0 to 5 mph SSW | 0% |
| Sunday | 100°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 74°F | Partly Cloudy | 0 mph | 1% |
| Monday | 100°F | Mostly Sunny | 0 to 5 mph W | 7% |
| Monday Night | 72°F | Partly Cloudy | 0 mph | 10% |
| Tuesday | 97°F | Mostly Sunny | 0 to 10 mph N | 13% |
| Tuesday Night | 69°F | Partly Cloudy | 5 to 10 mph NNE | 13% |
| Wednesday | 93°F | Sunny | 10 mph NNE | 4% |
| Wednesday Night | 67°F | Mostly Clear | 5 to 10 mph NNE | 4% |
| Thursday | 91°F | Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 66°F | Mostly Clear | 5 to 10 mph NNE | 4% |
| Friday | 91°F | Mostly Sunny | 5 to 10 mph NNE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portland, AR
Last spring frost
Mar 14
First fall frost
Nov 10
Growing season
241 days
Hardiness zone
8b
Explore more for Portland, AR: full frost dates · planting calendar · Arkansas frost dates
Climate data from the nearest NOAA station, Portland, Ar (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.