Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Beaufort, Marine Corps Air Station (KNBC)

Lat: 32.49°NLon: 80.7°WElev: 36ft.

Fair

78°F

26°C

Humidity 90%
Wind Speed S 6 mph
Barometer 29.96 in (1014.6 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Jun 3:56 am EDT
Extended Forecast for

4 Miles ENE Saint Helena Island SC

  • Today

    Today: A 40 percent chance of showers, mainly after 2pm.  Mostly sunny, with a high near 92. Heat index values as high as 105. South wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 92 °F

    Sunny then
    Chance
    Showers

  • Tonight

    Tonight: A 40 percent chance of showers after 5am.  Mostly cloudy, with a low around 78. Southwest wind 10 to 13 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: Showers and thunderstorms before 3pm, then a chance of showers.  High near 89. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 31 mph.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    T-storms and
    Breezy

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Mostly cloudy, with a low around 75. West wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 91. Northwest wind around 6 mph becoming southeast in the afternoon.

    High: 91 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 76.

    Low: 76 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 76.

    Low: 76 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers, mainly after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 105. South wind 9 to 14 mph, with gusts as high as 22 mph.
Tonight
A 40 percent chance of showers after 5am. Mostly cloudy, with a low around 78. Southwest wind 10 to 13 mph, with gusts as high as 25 mph.
Juneteenth
Showers and thunderstorms before 3pm, then a chance of showers. High near 89. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 75. West wind 6 to 9 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Northwest wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Sunday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Monday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 78.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Saint Helena Island SC
 32.41°N 80.49°W (Elev. 3 ft)
2:40 am EDT Jun 18, 2026
4am EDT Jun 18, 2026-6pm EDT Jun 24, 2026
 
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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