Ackley Lake State Park Weather Forecast

    • 26
    • 48

    Mostly Sunny

    • 30
    • 46

    Increasing Clouds

    • 30
    • 44

    Mostly Cloudy

    • 5
    • 43

    Chance Rain/Snow

    • -8
    • 15

    Snow Likely

    • -9
    • 3

    Snow Likely

    • -9
    • 5

    Snow Likely

Today 29 Jan Judith Basin County and Judith Gap

Breezy, sunny. Highs 45 to 50. Southwest Winds 15 to 25 Mph.

Tonight 29 Jan Judith Basin County and Judith Gap

Windy. Mostly clear. Lows 25 to 30. Southwest Winds 20 to 30 Mph.

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  • Temperature Real-Time

Ackley Lake State Park Temperature Statistics

January Temperature

Lewistown, Lewistown Municipal Airport (22.4 miles)

  • Lowest 20 January, 2025

    -19.2 °F

  • Average January

    18.2 °F

  • Highest 10 January, 2025

    44.7 °F

Climate (2020–Present)

Lewistown, Lewistown Municipal Airport (22.4 miles)

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  • Average Low 2020–2025

    32.4 °F

  • Average 2020–2025

    44.5 °F

  • Average High 2020–2025

    56.3 °F
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