Garneill Weather Forecast

    • 22
    • 36

    Snow

    • 22
    • 35

    Snow Likely

    • 27
    • 39

    Slight Chance Snow

    • 29
    • 41

    Chance Rain/Snow

    • 26
    • 47

    Rain/Snow Likely

    • 27
    • 41

    Chance Rain/Snow

Today 5 Dec Judith Basin County and Judith Gap

Partly sunny with a 20 percent chance of snow. Highs in the upper 30s. West Winds 5 to 10 Mph shifting to the south in the afternoon.

Tonight 5 Dec Judith Basin County and Judith Gap

Snow. Snow accumulation of 1 to 4 Inches. Lows in the lower 20s. South Winds 5 to 15 Mph shifting to the west 10 to 15 Mph with Gusts to around 35 Mph after midnight. Chance of snow near 100 percent.

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Garneill Temperature Statistics

December Temperature

Lewistown, Lewistown Municipal Airport (24.2 miles)

  • Lowest 1 December, 2025

    12.9 °F

  • Average December

    27.9 °F

  • Highest 1 December, 2025

    34 °F

Climate (2020–Present)

Lewistown, Lewistown Municipal Airport (24.2 miles)

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  • Average Low 2020–2025

    32.4 °F

  • Average 2020–2025

    44.6 °F

  • Average High 2020–2025

    56.5 °F
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