Black Sandy State Park Weather Forecast

    • 49
    • 88

    Mostly Sunny

    • 53
    • 89

    Mostly Sunny

    • 54
    • 92

    Partly Sunny

    • 52
    • 87

    Mostly Cloudy

    • 51
    • 83

    Mostly Cloudy

    • 51
    • 82

    Chance Rain Showers

Today 17 Jul Gates of the Mountains

Sunny. Highs 75 to 85. Southwest Winds up to 10 Mph shifting to the west in the afternoon.

Tonight 17 Jul Gates of the Mountains

Mostly clear. Lows 50 to 55. North Winds 5 to 15 Mph.

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  • Temperature Real-Time

Black Sandy State Park Temperature Statistics

July Temperature

Helena Regional Airport (10.6 miles)

  • Lowest 5 July, 2025

    49.6 °F

  • Average July

    73.4 °F

  • Highest 8 July, 2025

    97.6 °F

Climate (2020–Present)

Helena Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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