Grannis, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grannis, a city in Polk County, Arkansas.
This Afternoon
70°F
Sunny
Sunny, with a high near 70. West northwest wind 0 to 5 mph.
7-day forecast for Grannis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 0 to 5 mph WNW | 0% |
| Tonight | 43°F | Partly Cloudy then Patchy Fog | 0 mph | 0% |
| Thursday | 72°F | Sunny | 0 to 5 mph SSW | 1% |
| Thursday Night | 48°F | Partly Cloudy | 0 to 5 mph N | 7% |
| Friday | 68°F | Mostly Sunny | 5 mph N | 0% |
| Friday Night | 41°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Saturday | 65°F | Partly Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 37°F | Mostly Cloudy | 0 to 5 mph NNE | 1% |
| Sunday | 64°F | Mostly Sunny | 0 mph | 0% |
| Sunday Night | 37°F | Partly Cloudy | 0 mph | 0% |
| Monday | 68°F | Sunny | 0 mph | 1% |
| Monday Night | 39°F | Slight Chance Rain Showers then Mostly Clear | 0 mph | 15% |
| Tuesday | 69°F | Sunny | 0 mph | 4% |
| Tuesday Night | 40°F | Mostly Clear | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Grannis (34.240, -94.322). Updated through the day.
Growing snapshot for Grannis
Last spring frost
Mar 29
First fall frost
Nov 5
Growing season
222 days
Hardiness zone
8a
More local growing data for Grannis: nearby ZIP 71944 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dequeen, Ar (13.5 mi from Grannis). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.