Marine Weather Net

Johns Island, SC Weather Forecast




Johns Island, South Carolina

 Lat: 32.72N, Lon: 80.06W

Current Conditions Updated: 1256 AM EST SAT JAN 17 2026

Clear


Temp: 34°F
  • Humidity:
  • 75%
  • Winds:
  • N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.19 in.
  • Dewpoint:
  • 27°F
  • Heat index:
  • 34°F

  • Sunrise:
  • 7:21 AM EST
  • Sunset:
  • 5:36 PM EST
  • Moonrise:
  • 6:45 AM EST
  • Moonset:
  • 4:33 PM EST

TONIGHT

MOSTLY CLEAR
Lo: 40°F

SATURDAY

PARTLY SUNNY
Hi: 61°F
Lo: 37°F

SUNDAY

SHOWERS
Hi: 49°F
Lo: 29°F
Precip: 100%

MARTIN LUTHER KING JR DAY

SUNNY

Hi: 51°F
Lo: 30°F
Weather Forecast In Detail:
Forecast Issued: 1237 AM EST Sat Jan 17 2026

Rest Of Tonight...Mostly clear. Lows in the mid 30s, except around 40 near the coast. Southwest winds 5 to 10 mph.
Saturday...Partly sunny. Highs in the lower 60s. Southwest winds 5 to 10 mph.
Saturday Night...Mostly cloudy. A chance of showers after midnight. Lows in the upper 30s. West winds around 5 mph, becoming northwest after midnight. Chance of rain 50 percent.
Sunday...Showers, cooler with highs in the upper 40s. Northwest winds 5 to 10 mph. Chance of rain near 100 percent.
Sunday Night...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 20s. West winds 5 to 10 mph.
Martin Luther King Jr Day...Sunny. Highs in the lower 50s.
Monday Night...Mostly clear. Lows around 30.
Tuesday...Sunny. Highs in the upper 40s.
Tuesday Night...Mostly clear. Lows in the lower 30s.
Wednesday...Mostly sunny. Highs in the upper 50s.
Wednesday Night...Mostly cloudy. Lows in the lower 40s.
Thursday...Mostly cloudy with a 20 percent chance of showers. Highs in the lower 60s.
Thursday Night...Mostly cloudy with a 20 percent chance of showers. Lows in the mid 40s.
Friday...Mostly sunny. Highs around 60.
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