Sister Islands State Natural Area Weather Forecast

    • 60
    • 71

    Partly Sunny

    • 64
    • 71

    Chance Rain Showers

    • 66
    • 75

    Rain Showers Likely

    • 66
    • 75

    Rain Showers Likely

    • 66
    • 77

    Chance Rain Showers

    • 65
    • 78

    Slight Chance Rain Showers

Today 27 Aug Door

Mostly sunny in the morning then becoming partly cloudy. Highs in the middle 70s. North wind 10 to 15 Mph.

Tonight 27 Aug Door

Partly cloudy. A chance of Sprinkles. Lows in the upper 50s. East wind 5 to 10 Mph.

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Sister Islands State Natural Area Temperature Statistics

August Temperature

Ephraim-Gibraltar Airport (6.2 miles)

  • Lowest 24 August, 2026

    51.6 °F

  • Average August

    67.4 °F

  • Highest 16 August, 2026

    82.4 °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

    52.7 °F
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