Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Charleston, Charleston Air Force Base (KCHS)

Lat: 32.9°NLon: 80.04°WElev: 46ft.

Mostly Cloudy

76°F

24°C

Humidity 88%
Wind Speed SW 7 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 17 Jun 7:56 am EDT
Extended Forecast for

Charleston Air Force Base SC

  • Today

    Today: Showers and thunderstorms likely before 2pm, then a chance of showers between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly cloudy, with a high near 86. Southwest wind around 10 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 75. Southwest wind around 8 mph.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 2pm.  Increasing clouds, with a high near 93. Heat index values as high as 106. Southwest wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 5am, then showers likely after 5am.  Mostly cloudy, with a low around 74. Southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: Showers and possibly a thunderstorm before 2pm, then showers and thunderstorms likely between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  High near 90. West wind 11 to 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm.  Mostly cloudy, with a low around 73. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 91.

    High: 91 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms likely before 2pm, then a chance of showers between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 86. Southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Southwest wind around 8 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 93. Heat index values as high as 106. Southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 5am, then showers likely after 5am. Mostly cloudy, with a low around 74. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Showers and possibly a thunderstorm before 2pm, then showers and thunderstorms likely between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. High near 90. West wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 73. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Partly sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
Mostly sunny, with a high near 93.
Sunday Night
Partly cloudy, with a low around 75.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Charleston Air Force Base SC
 32.93°N 80.04°W (Elev. 30 ft)
7:22 am EDT Jun 17, 2026
8am EDT Jun 17, 2026-6pm EDT Jun 23, 2026
 
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