St. Simons, GA Weather & Growing Conditions
Today
76°F
Partly Sunny
Partly sunny. High near 76, with temperatures falling to around 75 in the afternoon. Southeast wind around 13 mph, with gusts as high as 17 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Partly Sunny | 13 mph SE | 12% |
| Tonight | 69°F | Mostly Cloudy | 3 to 10 mph SE | 13% |
| Thursday | 77°F | Mostly Sunny | 2 to 6 mph SE | 7% |
| Thursday Night | 67°F | Partly Cloudy | 3 mph S | 4% |
| Friday | 78°F | Partly Sunny then Slight Chance Rain Showers | 3 to 7 mph SW | 24% |
| Friday Night | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 7 mph W | 24% |
| Saturday | 73°F | Sunny | 3 to 8 mph N | 1% |
| Saturday Night | 57°F | Partly Cloudy | 2 to 7 mph N | 1% |
| Sunday | 69°F | Mostly Sunny | 9 mph N | 1% |
| Sunday Night | 56°F | Partly Cloudy then Slight Chance Rain Showers | 3 to 7 mph N | 15% |
| Monday | 68°F | Slight Chance Rain Showers | 10 mph N | 15% |
| Monday Night | 55°F | Slight Chance Rain Showers | 7 mph N | 15% |
| Tuesday | 68°F | Mostly Sunny then Slight Chance Rain Showers | 7 mph NE | 15% |
| Tuesday Night | 56°F | Slight Chance Rain Showers | 5 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Simons, GA
Last spring frost
Feb 9
First fall frost
Dec 26
Growing season
312 days
Hardiness zone
9a
Explore more for St. Simons, GA: full frost dates · planting calendar · Georgia frost dates
Climate data from the nearest NOAA station, Brunswick Malcolm Mckinnon Ap, Ga (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.