Roundup Airport Weather Forecast

    • 43
    • 78

    Mostly Sunny

    • 51
    • 85

    Partly Sunny

    • 36
    • 81

    Rain Showers

    • 29
    • 45

    Chance Snow Showers

    • 23
    • 44

    Chance Snow Showers

    • 23
    • 46

    Slight Chance Snow Showers

    • 27
    • 51

    Mostly Cloudy

Today 20 Apr Musselshell

Sunny. Highs in the upper 70s. West Winds 5 to 10 Mph.

Tonight 20 Apr Musselshell

Partly cloudy. Lows in the mid 40s. East Winds 5 to 10 Mph in the evening shifting to the southwest overnight.

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Roundup Airport Temperature Statistics

April Temperature

N BAR Ranch Airport (31.1 miles)

  • Lowest 16 April, 2026

    21.2 °F

  • Average April

    39.8 °F

  • Highest 11 April, 2026

    71.6 °F

Climate (2021–Present)

N BAR Ranch Airport (31.1 miles)

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  • Average Low 2021–2026

    32 °F

  • Average 2021–2026

    44.2 °F

  • Average High 2021–2026

    55.6 °F
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