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.
This Afternoon
95°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 95. Heat index values as high as 100. Southwest wind around 2 mph. Chance of precipitation is 20%.
7-day forecast for St. Charles
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 95°F | Slight Chance Showers And Thunderstorms | 2 mph SW | 15% |
| Tonight | 71°F | Chance Showers And Thunderstorms | 2 mph NW | 34% |
| Saturday | 91°F | Patchy Fog then Chance Showers And Thunderstorms | 1 to 5 mph NE | 42% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph NE | 34% |
| Sunday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 mph E | 28% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph E | 28% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 mph E | 38% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 2 mph E | 42% |
| Tuesday | 87°F | Showers And Thunderstorms Likely | 1 to 6 mph NE | 55% |
| Tuesday Night | 68°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 8 mph NE | 55% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 8 to 14 mph NE | 31% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms | 7 to 13 mph NE | 31% |
| Thursday | 82°F | Mostly Sunny | 9 to 13 mph NE | 13% |
| Thursday Night | 63°F | Partly Cloudy | 5 to 12 mph NE | 13% |
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 Sep 19, 2026.