Steamboat Mountain Weather Forecast

    • 48
    • 63

    Mostly Sunny

    • 46
    • 63

    Partly Sunny

    • 48
    • 64

    Mostly Sunny

    • 39
    • 53

    Chance Rain

    • 42
    • 53

    Mostly Sunny

    • 44
    • 62

    Mostly Sunny

Today 18 Sep Southern Rocky Mountain Front

Sunny. Highs 65 to 75. Northwest Winds up to 10 Mph.

Tonight 18 Sep Southern Rocky Mountain Front

Mostly clear. Lows 45 to 50. Northeast Winds up to 10 Mph shifting to the southwest after midnight.

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Steamboat Mountain Temperature Statistics

September Temperature

Helena Regional Airport (57.2 miles)

  • Lowest 5 September, 2025

    46 °F

  • Average September

    64.9 °F

  • Highest 3 September, 2025

    91.9 °F

Climate (2020–Present)

Helena Regional Airport (57.2 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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