Sister Islands State Natural Area Weather Forecast

    • 73
    • 88

    Increasing Clouds

    • 72
    • 93

    Mostly Sunny

    • 69
    • 86

    Partly Sunny

    • 68
    • 83

    Partly Sunny

    • 66
    • 82

    Chance Rain Showers

    • 67
    • 81

    Chance Rain Showers

Today 13 Jul Door

Hot and humid. Sunny. Highs in the middle 90s. West wind 10 to 15 Mph. Heat indices to 105.

Tonight 13 Jul Door

Muggy. Mostly clear. Lows in the lower 70s. West wind 5 to 10 Mph. Highest heat index Readings to 101 in the evening.

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Sister Islands State Natural Area Temperature Statistics

July Temperature

Ephraim-Gibraltar Airport (6.2 miles)

  • Lowest 7 July, 2026

    57.7 °F

  • Average July

    71.1 °F

  • Highest 1 July, 2026

    84.4 °F

Climate (2021–2026)

Ephraim-Gibraltar Airport (6.2 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    52.6 °F
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