7-Day Forecast 32.73°N 80.07°W (Text-Only)
NWS Forecast for: Johns Island SC
Issued by: National Weather Service Charleston, SC
Last Update: 6:37 pm EDT Jul 12, 2025
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  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm  after midnight.

    Low: 75 °F

    Slight Chance
    T-storms


  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 93. Heat index values as high as 105. Calm wind becoming east around 5 mph in the afternoon.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Sunday
    Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 77. East wind around 5 mph becoming calm  in the evening.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 91 °F

    Chance
    T-storms


  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 77. Southeast wind around 6 mph becoming calm  in the evening.

    Low: 77 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  Partly sunny, with a high near 88. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    T-storms
    Likely


  • Tuesday
    Night

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

    Low: 77 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm.  High near 88. Chance of precipitation is 80%.

    High: 88 °F

    Showers



  • Wednesday
    Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am.  Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm after midnight.

    Sunday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Calm wind becoming east around 5 mph in the afternoon.

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening.

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming east 5 to 7 mph in the afternoon.

    Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77. Southeast wind around 6 mph becoming calm in the evening.

    Tuesday: Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 88. Chance of precipitation is 60%. New rainfall amounts of less than a tenth 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, mainly after 2am. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.

    Wednesday: A chance of showers and thunderstorms before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 88. Chance of precipitation is 80%.

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 78.

    Thursday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 60%.

    Thursday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.

    Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.



    Johns Island SC
     32.73°N 80.07°W (Elev. 23 ft)

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