Winthrop, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winthrop, a city in Little River County, Arkansas.
This Afternoon
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 102. South wind around 5 mph.
7-day forecast for Winthrop
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 5 mph S | 0% |
| Tonight | 69°F | Mostly Clear | 0 to 5 mph S | 0% |
| Sunday | 98°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 70°F | Mostly Cloudy | 0 to 5 mph S | 2% |
| Monday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 16% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph N | 16% |
| Tuesday | 94°F | Mostly Sunny | 5 to 10 mph NE | 10% |
| Tuesday Night | 66°F | Partly Cloudy | 5 to 10 mph NE | 10% |
| Wednesday | 92°F | Sunny | 5 to 10 mph NE | 3% |
| Wednesday Night | 63°F | Mostly Clear | 5 mph E | 2% |
| Thursday | 91°F | Mostly Sunny | 5 mph E | 0% |
| Thursday Night | 64°F | Partly Cloudy | 5 mph E | 0% |
| Friday | 92°F | Mostly Sunny | 5 mph NE | 2% |
| Friday Night | 65°F | Mostly Cloudy | 5 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Winthrop (33.831, -94.354). Updated through the day.
Growing snapshot for Winthrop
Last spring frost
Mar 29
First fall frost
Nov 5
Growing season
222 days
Hardiness zone
8a
More local growing data for Winthrop: nearby ZIP 71866 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dequeen, Ar (12.4 mi from Winthrop). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.