St. Charles, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Charles, a town in Arkansas County, Arkansas.
Tonight
75°F
Clear
Clear, with a low around 75. West southwest wind around 0 mph.
7-day forecast for St. Charles
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Clear | 0 mph | 0% |
| Saturday | 104°F | Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 76°F | Clear | 0 to 5 mph SW | 0% |
| Sunday | 103°F | Sunny | 0 to 5 mph WSW | 0% |
| Sunday Night | 77°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Monday | 102°F | Mostly Sunny | 0 to 5 mph WNW | 8% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 20% |
| Tuesday | 96°F | Mostly Sunny | 5 to 10 mph N | 9% |
| Tuesday Night | 68°F | Partly Cloudy | 5 to 10 mph NNE | 9% |
| Wednesday | 92°F | Sunny | 5 to 10 mph NNE | 3% |
| Wednesday Night | 66°F | Mostly Clear | 5 to 10 mph NNE | 3% |
| Thursday | 91°F | Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 66°F | Partly Cloudy | 5 mph NNE | 3% |
| Friday | 91°F | Mostly Sunny | 5 to 10 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for St. Charles (34.373, -91.137). Updated through the day.
Growing snapshot for St. Charles
Last spring frost
Mar 17
First fall frost
Nov 10
Growing season
238 days
Hardiness zone
8b
More local growing data for St. Charles: nearby ZIP 72140 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Saint Charles, Ar (3.6 mi from St. Charles). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.