Garneill Weather Forecast

    • 44
    • 72

    Increasing Clouds

    • 48
    • 77

    Partly Sunny

    • 29
    • 72

    Rain

    • 23
    • 36

    Chance Snow

    • 20
    • 36

    Chance Snow

    • 20
    • 40

    Chance Snow

    • 24
    • 45

    Slight Chance Snow

Today 20 Apr Judith Basin County and Judith Gap

Sunny. Highs in the lower 70s. Northwest Winds 5 to 10 Mph.

Tonight 20 Apr Judith Basin County and Judith Gap

Partly cloudy. Lows in the mid 40s. West Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Garneill Temperature Statistics

April Temperature

Lewistown, Lewistown Municipal Airport (24.2 miles)

  • Lowest 16 April, 2026

    21.7 °F

  • Average April

    42.8 °F

  • Highest 11 April, 2026

    74.6 °F

Climate (2021–Present)

Lewistown, Lewistown Municipal Airport (24.2 miles)

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  • Average Low 2021–2026

    32.7 °F

  • Average 2021–2026

    45 °F

  • Average High 2021–2026

    57.1 °F
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