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
56°F
Mostly Cloudy
Mostly cloudy, with a low around 56. West northwest wind around 5 mph. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for St. Charles
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Cloudy | 5 mph WNW | 8% |
| Wednesday | 72°F | Sunny | 5 mph WNW | 0% |
| Wednesday Night | 48°F | Mostly Clear | 0 mph | 0% |
| Thursday | 74°F | Mostly Sunny | 0 mph | 0% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph SSW | 0% |
| Friday | 69°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Friday Night | 44°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 64°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 41°F | Partly Cloudy | 0 to 5 mph N | 2% |
| Sunday | 65°F | Mostly Sunny | 5 mph NNW | 6% |
| Sunday Night | 40°F | Mostly Clear | 0 to 5 mph NW | 2% |
| Monday | 68°F | Sunny | 0 to 5 mph W | 0% |
| Monday Night | 41°F | Mostly Clear | 0 to 5 mph SSW | 1% |
| Tuesday | 72°F | Sunny | 0 to 5 mph SW | 1% |
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 Nov 4, 2026.