Garneill Weather Forecast

    • 24
    • 43

    Increasing Clouds

    • 16
    • 35

    Chance Snow

    • 14
    • 30

    Partly Sunny

    • 3
    • 28

    Mostly Cloudy

    • 8
    • 23

    Chance Snow

    • 16
    • 33

    Chance Snow

Today 19 Jan Judith Basin County and Judith Gap

Mostly sunny. Highs in the lower 40s. West Winds 10 to 20 Mph.

Tonight 19 Jan Judith Basin County and Judith Gap

Mostly cloudy. Lows in the mid 20s. West Winds 5 to 20 Mph. Gusts up to 40 Mph after midnight.

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  • Temperature Real-Time

Garneill Temperature Statistics

January Temperature

Lewistown, Lewistown Municipal Airport (24.2 miles)

  • Lowest 17 January, 2026

    12 °F

  • Average January

    38.1 °F

  • Highest 14 January, 2026

    64 °F

Climate (2021–Present)

Lewistown, Lewistown Municipal Airport (24.2 miles)

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  • Average Low 2021–2026

    32.4 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    56.6 °F
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