Whitemarsh Island, GA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Whitemarsh Island, a community in Chatham County, Georgia.
Today
88°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Southwest wind 2 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Whitemarsh Island
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 10 mph SW | 33% |
| Tonight | 76°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 9 mph S | 55% |
| Wednesday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 12 mph S | 15% |
| Wednesday Night | 77°F | Mostly Cloudy then Chance Showers And Thunderstorms | 3 to 10 mph S | 40% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 1 to 9 mph S | 40% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms | 2 to 8 mph SE | 27% |
| Friday | 88°F | Chance Showers And Thunderstorms | 2 to 12 mph SE | 49% |
| Friday Night | 78°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 10 mph SE | 32% |
| Saturday | 87°F | Showers And Thunderstorms Likely | 3 to 9 mph SE | 62% |
| Saturday Night | 77°F | Chance Showers And Thunderstorms | 1 to 8 mph S | 34% |
| Sunday | 89°F | Chance Showers And Thunderstorms | 1 to 8 mph S | 41% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms | 2 to 8 mph S | 41% |
| Monday | 91°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 34% |
| Monday Night | 78°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov) for Whitemarsh Island (32.030, -81.013). Updated through the day.
Growing snapshot for Whitemarsh Island
Last spring frost
Mar 2
First fall frost
Nov 30
Growing season
270 days
Hardiness zone
9a
More local growing data for Whitemarsh Island: nearby ZIP 31410 weather · frost dates · planting calendar · Georgia frost dates
Nearby towns & communities
Bloomingdale
Dutch Island
Garden City
Georgetown
Henderson
Isle of Hope
Montgomery
Pooler
Port Wentworth
Savannah
Skidaway Island
Talahi Island
Thunderbolt
Tybee Island
Vernonburg
Wilmington Island
Climate data from the nearest NOAA station, Savannah Intl Ap, Ga (15.2 mi from Whitemarsh Island). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.