White Sulphur Springs Weather Forecast

    • 46
    • 79

    Mostly Sunny

    • 39
    • 81

    Mostly Sunny

    • 39
    • 64

    Partly Sunny

    • 41
    • 67

    Rain Likely

    • 36
    • 62

    Chance Rain

    • 38
    • 63

    Partly Sunny

Today 24 Sep Meagher County Valleys

Sunny. Highs in the mid 70s. South Winds 5 to 10 Mph with Gusts to around 25 Mph.

Tonight 24 Sep Meagher County Valleys

Mostly clear. Lows in the upper 40s. Southeast Winds 5 to 15 Mph.

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White Sulphur Springs Temperature Statistics

September Temperature

Helena Regional Airport (51.6 miles)

  • Lowest 15 September, 2026

    39.7 °F

  • Average September

    60.9 °F

  • Highest 10 September, 2026

    87.7 °F

Climate (2021–2026)

Helena Regional Airport (51.6 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    59.9 °F
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