National Weather Service United States Department of Commerce

Developing storm will spread rain across eastern U.S.; thunderstorms in the Southeast

A storm system developing in the South will move up the Mississippi River Valley on Sunday bringing rainfall to much of the eastern U.S., along with thunderstorms in the southeastern states. Some of the thunderstorms in the Southeast could produce large hail, damaging wind and heavy rain.
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Current Conditions

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4 Miles SE Johns Island SC

7 Day Forecast

For More Weather Information:

Charleston, SC Local Forecast Office

Tonight

Scattered Showers Chance for Measurable Precipitation 40%

Scattered
Showers

Low: 57 °F

Sunday

Heavy Rain Chance for Measurable Precipitation 100%

Heavy
Rain

High: 67 °F

Sunday
Night

Showers Chance for Measurable Precipitation 80%

Showers

Low: 65 °F

Monday

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

High: 74 °F

Monday
Night

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 56 °F

Tuesday

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

High: 60 °F

Tuesday
Night

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

Low: 45 °F

Wednesday

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

High: 57 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 41 °F

Detailed Forecast

  • Tonight Scattered showers, mainly after 2am. Cloudy, with a low around 57. East wind 7 to 9 mph. Chance of precipitation is 40%.
  • Sunday Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 67. Breezy, with an east wind 13 to 21 mph becoming southeast in the afternoon. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
  • Sunday Night Showers and possibly a thunderstorm, mainly before 11pm, then a chance of showers and thunderstorms after 11pm. Patchy fog after midnight. Low around 65. South wind 14 to 18 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
  • Monday A chance of showers and thunderstorms, mainly after 10am. Patchy fog before 10am. Otherwise, cloudy, with a high near 74. Southwest wind 14 to 17 mph. Chance of precipitation is 40%.
  • Monday Night A chance of showers. Mostly cloudy, with a low around 56. Southwest wind around 9 mph. Chance of precipitation is 30%.
  • Tuesday A chance of rain. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
  • Tuesday Night A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
  • Wednesday A chance of showers. Mostly cloudy, with a high near 57. Chance of precipitation is 40%.
  • Wednesday Night Partly cloudy, with a low around 41.
  • Thanksgiving Day Sunny, with a high near 59.
  • Thursday Night Mostly clear, with a low around 40.
  • Friday Sunny, with a high near 56.
  • Friday Night Mostly clear, with a low around 40.
  • Saturday Sunny, with a high near 61.