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

Hazardous Weather Conditions

Current conditions at

Beaufort, Marine Corps Air Station (KNBC)

Lat: 32.49°NLon: 80.7°WElev: 36ft.

Fair

76°F

24°C

Humidity 94%
Wind Speed W 6 mph
Barometer 30.10 in (1019.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 15 Aug 5:56 am EDT
Extended Forecast for

Saint Helena Island SC

Extreme Heat Warning August 15, 11:00am until August 15, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny, with a high near 95. Heat index values as high as 110. West wind 3 to 8 mph.

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 79. South wind 3 to 6 mph.

    Low: 79 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 96. Heat index values as high as 112. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 80. South wind 3 to 5 mph.

    Low: 80 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 100. Southwest wind around 7 mph.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 82.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 80.

    Low: 80 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 96.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 95. Heat index values as high as 110. West wind 3 to 8 mph.
Tonight
Mostly cloudy, with a low around 79. South wind 3 to 6 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 96. Heat index values as high as 112. Light and variable wind becoming south around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 80. South wind 3 to 5 mph.
Monday
Sunny and hot, with a high near 100. Southwest wind around 7 mph.
Monday Night
Mostly clear, with a low around 82.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Partly cloudy, with a low around 80.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 96.
Wednesday Night
Partly cloudy, with a low around 80.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 96.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena Island SC
 32.39°N 80.57°W (Elev. 20 ft)
Last Update:
2:40 am EDT Aug 15, 2026
Forecast Valid:
6am EDT Aug 15, 2026-6pm EDT Aug 21, 2026
 
Forecast Discussion
 
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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