St. Charles, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Charles, a community in Lee County, South Carolina.
Today
87°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then showers and thunderstorms likely. Partly sunny, with a high near 87. East wind around 3 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for St. Charles
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Chance Showers And Thunderstorms | 3 mph E | 65% |
| Tonight | 71°F | Showers And Thunderstorms then Mostly Cloudy | 2 mph NE | 75% |
| Wednesday | 89°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 6 mph S | 53% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms | 1 to 6 mph S | 32% |
| Thursday | 90°F | Partly Sunny then Showers And Thunderstorms Likely | 1 to 5 mph S | 70% |
| Thursday Night | 72°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 3 mph S | 70% |
| Friday | 92°F | Chance Showers And Thunderstorms | 0 to 6 mph S | 34% |
| Friday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 34% |
| Saturday | 91°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SE | 32% |
| Saturday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 32% |
| Sunday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 3 mph SW | 39% |
| Sunday Night | 73°F | Chance Showers And Thunderstorms | 3 mph S | 39% |
| Monday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 mph SW | 29% |
| Monday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 29% |
Forecast source: National Weather Service (api.weather.gov) for St. Charles (34.081, -80.225). Updated through the day.
Growing snapshot for St. Charles
Last spring frost
Mar 19
First fall frost
Nov 15
Growing season
241 days
Hardiness zone
8b
More local growing data for St. Charles: nearby ZIP 29046 weather · frost dates · planting calendar · South Carolina frost dates
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Climate data from the nearest NOAA station, Elliott 0.8 Nw, Sc (0.6 mi from St. Charles). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.