Lake Sakakawea State Park Weather Forecast

    • 61
    • 79

    Areas Smoke

    • 56
    • 78

    Chance Thunderstorms

    • 58
    • 77

    Mostly Sunny

    • 62
    • 84

    Slight Chance Thunderstorms

    • 60
    • 86

    Slight Chance Thunderstorms

    • 57
    • 79

    Slight Chance Thunderstorms

Today 10 Aug Mercer

Mostly sunny. Areas of smoke. Highs in the upper 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 10 Aug Mercer

Partly cloudy. Areas of smoke. Lows in the upper 50s. Southwest Winds around 5 Mph.

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Lake Sakakawea State Park Temperature Statistics

August Temperature

Garrison (8.1 miles)

  • Lowest 8 August, 2025

    57 °F

  • Average August

    70 °F

  • Highest 7 August, 2025

    90.6 °F

Climate (2020–Present)

Garrison (8.1 miles)

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  • Average Low 2020–2025

    31.2 °F

  • Average 2020–2025

    42.6 °F

  • Average High 2020–2025

    54.1 °F
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