Johns Island, SC Weather Tomorrow

Follow tomorrow's Johns Island weather with an accurate 5 day outlook that includes precipitation probability, daily and nightly weather conditions, high and low temperature trends, sunrise and sunset information, sky cover, wind speed, wind direction, and wind chill for the Johns Island area and around Charleston county, South Carolina.
Updated: Fri Sep 25th 2026 9:45 PM EDT
Johns Island, SC Weather – 9-25 – Sunny
77° / 59°
Sunny
Bright and sunny conditions in Johns Island, with a high of 77°F and a low of 59°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 13mph on average and gusts of 6.5mph at 11 PM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 45% at 11 PM and 45% being its lowest at 11 PM. Barometric pressure is its highest of 30inHg at 11 PM, a lowest point of 30inHg at 11 PM with an avg 30inHg.
Johns Island, SC Weather – 9-26 – Sunny
82° / 58°

Weather Tomorrow

Sunny
In Johns Island, sunshine is likely with a high near 82°F and a low around 58°F. There's a very small chance of rainfall, only about 1%. Winds will be light at 7mph and gusts of 13.5mph at 7 AM. Humidity levels should be comfortable, sitting around 40% on average, the maximum being 62% at 7 AM and 17% being its lowest at 3 PM. Barometric pressure is its highest of 30.02inHg at 10 AM, a lowest point of 29.89inHg at 5 PM with an avg 29.96inHg.
Johns Island, SC Weather – 9-27 – Sunny
84° / 59°
Sunny
In Johns Island, a sunny day is likely with a high near 84°F and a low around 59°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 9mph and gusts of 17.3mph at 7 PM. Humidity levels should be comfortable, sitting around 52% on average, the maximum being 78% at 11 PM and 31% being its lowest at 1 PM. Barometric pressure is its highest of 29.91inHg at 1 AM, a lowest point of 29.81inHg at 5 PM with an avg 29.87inHg.
Johns Island, SC Weather – 9-28 – Sunny
85° / 67°
Sunny
In Johns Island, bright and sunny conditions with highs near 85°F and lows around 67°F. There might be light rainfall having a 17% chance with an estimated 0in. Winds will be light at 9mph and gusts of 19.9mph at 4 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 88% at 4 AM and 47% being its lowest at 1 PM. Barometric pressure is its highest of 29.94inHg at 11 PM, a lowest point of 29.86inHg at 5 PM with an avg 29.89inHg.
Johns Island, SC Weather – 9-29 – Sunny
86° / 69°
Sunny
Daytime highs will reach 86°F with lows dropping to 69°F in Johns Island, where bright and sunny conditions. There's a very small chance of rainfall, only about 5% with an estimated 0in. Winds will be light at 10mph and gusts of 20.1mph at 4 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 84% at 11 PM and 43% being its lowest at 3 PM. Barometric pressure is its highest of 30inHg at 10 AM, a lowest point of 29.9inHg at 5 PM with an avg 29.94inHg.
Johns Island, SC Weather – 9-30 – Sunny
86° / 71°
Sunny
In Johns Island, it will be sunny with highs near 86°F and lows around 71°F. There's a very small chance of rainfall, only about 8% with an estimated 0in. Winds will be light at 9mph and gusts of 18.6mph at 5 PM. The humidity will be on the higher side, averaging about 74%, the maximum being 90% at 4 AM and 48% being its lowest at 2 PM. Barometric pressure is its highest of 30.03inHg at 11 AM, a lowest point of 29.95inHg at 2 AM with an avg 29.99inHg.

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