
NWS JAX Weather Impact Briefing
Isolated Severe Thunderstorms Possible Sunday Afternoon & Evening, and Scattered Severe Thunderstorms Possible Monday Read More >
Current conditions at
Brunswick, Malcolm McKinnon Airport (KSSI)
Lat: 31.15°NLon: 81.39°WElev: 20ft.
Overcast
66°F
19°C
| Humidity | 100% |
| Wind Speed | E 6 mph |
| Barometer | 30.01 in |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 15 Mar 5:35 am EDT |
Extended Forecast for
Sea Island GA
Overnight

Low: 61 °F
Chance
ShowersSunday
High: 76 °F
Chance
Showers and
Patchy FogSunday Night

Low: 64 °F
Chance
ShowersMonday

High: 76 °F
Showers and
BreezyMonday Night
Low: 37 °F
Chance
T-storms then
Slight Chance
ShowersTuesday

High: 56 °F
Partly Sunny
Tuesday Night

Low: 40 °F
Mostly Cloudy
Wednesday

High: 60 °F
Sunny
Wednesday Night

Low: 47 °F
Partly Cloudy
Detailed Forecast
Overnight
A 30 percent chance of showers. Mostly cloudy, with a low around 61. East wind around 7 mph.
Sunday
A chance of showers, with thunderstorms also possible after 5pm. Patchy fog between 8am and 2pm. Otherwise, partly sunny, with a high near 76. East wind 6 to 14 mph becoming south in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 76. Breezy, with a south wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.
Monday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 37. West wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 78.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Sea Island GA
31.18°N 81.36°W
31.18°N 81.36°W
2:21 am EDT Mar 15, 2026
5am EDT Mar 15, 2026-6pm EDT Mar 21, 2026


