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

82°F

28°C

Humidity 74%
Wind Speed S 5 mph
Barometer 30.07 in (1018.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 11 Jul 9:56 pm EDT
Extended Forecast for

Saint Helena Island SC

Heat Advisory July 12, 11:00am until July 12, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 80. West wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 80 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 97. Heat index values as high as 108. West wind around 8 mph becoming south in the afternoon.

    High: 97 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 77. South wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 77 °F

    Showers
    Likely then
    Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Light and variable wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Mostly Sunny
    then T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 76 °F

    T-storms
    Likely then
    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

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

    Low: 77 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 78.

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 80. West wind 7 to 10 mph, with gusts as high as 20 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 97. Heat index values as high as 108. West wind around 8 mph becoming south in the afternoon.
Sunday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 77. South wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Light and variable wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 77. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 78.
Thursday
Sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 79.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena Island SC
 32.39°N 80.57°W (Elev. 20 ft)
Last Update:
8:32 pm EDT Jul 11, 2026
Forecast Valid:
10pm EDT Jul 11, 2026-6pm EDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation