National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Beaufort, Marine Corps Air Station (KNBC)

Lat: 32.49°NLon: 80.7°WElev: 36ft.

Mostly Cloudy

91°F

33°C

Humidity 59%
Wind Speed W 8 mph
Barometer 29.93 in (1013.5 mb)
Dewpoint 75°F (24°C)
Visibility 7.00 mi
Heat Index102°F (39°C)
Last update 24 Aug 2:56 pm EDT
Extended Forecast for

Saint Helena Island SC

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 105. South wind around 8 mph.

    High: 94 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 76. South wind 3 to 7 mph.

    Low: 76 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Calm wind becoming south around 6 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 75. Light south wind. Chance of precipitation is 40%.

    Low: 75 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

    High: 89 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Partly cloudy, with a low around 76. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 76 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 77. Chance of precipitation is 60%.

    Low: 77 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 105. South wind around 8 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 76. South wind 3 to 7 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 75. Light south wind. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Partly cloudy, with a low around 76. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 77. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 76. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 76. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Monday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena Island SC
 32.39°N 80.57°W (Elev. 20 ft)
Last Update:
2:40 pm EDT Aug 24, 2026
Forecast Valid:
3pm EDT Aug 24, 2026-6pm EDT Aug 31, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation