Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Overcast

77°F

25°C

Humidity 100%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 77°F (25°C)
Visibility 7.00 mi
Heat Index78°F (26°C)
Last update 20 Jun 7:15 am EDT
Extended Forecast for

3 Miles N Johns Island SC

  • Today

    Today: Partly sunny, with a high near 90. Light and variable wind becoming east 5 to 7 mph in the afternoon.

    High: 90 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 74. South wind around 5 mph becoming calm  in the evening.

    Low: 74 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 91. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. South wind 5 to 7 mph.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 94. Southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 79.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 90. Light and variable wind becoming east 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 74. South wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 91. Calm wind becoming south 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 77. South wind 5 to 7 mph.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 79.
Tuesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76.
Wednesday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 75. Chance of precipitation is 50%.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Johns Island SC
 32.78°N 80.09°W (Elev. 3 ft)
2:35 am EDT Jun 20, 2026
7am EDT Jun 20, 2026-6pm EDT Jun 26, 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