Roundup Weather Forecast

    • 30
    • 48

    Gradual Clearing

    • 31
    • 54

    Mostly Cloudy

    • 35
    • 55

    Rain Showers Likely

    • 29
    • 55

    Partly Sunny

    • 30
    • 59

    Partly Sunny

    • 26
    • 55

    Partly Sunny

Today 30 Oct Musselshell

Decreasing Clouds. Patchy fog in the morning. Highs in the upper 40s. Northeast Winds 5 to 10 Mph.

Tonight 30 Oct Musselshell

Mostly cloudy. Patchy fog in the late evening and overnight. Lows in the lower 30s. Light and variable Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Roundup Temperature Statistics

October Temperature

N BAR Ranch Airport (32.9 miles)

  • Lowest 25 October, 2026

    23 °F

  • Average October

    48.5 °F

  • Highest 5 October, 2026

    82.4 °F

Climate (2021–2026)

N BAR Ranch Airport (32.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    31.9 °F

  • Average 2021–2026

    44 °F

  • Average High 2021–2026

    55.2 °F
Get WillyWeather+ to remove ads