Miller Lake Weather Forecast

    • 47
    • 75

    Decreasing Clouds

    • 33
    • 57

    Rain/Snow

    • 24
    • 39

    Snow

    • 20
    • 35

    Snow

    • 22
    • 39

    Chance Snow

    • 25
    • 42

    Chance Snow

    • 30
    • 48

    Chance Snow

Today 21 Apr Butte/Blackfoot Region

Partly cloudy. Highs in the 70s. South Winds 15 to 20 Mph with Gusts to around 30 Mph in the afternoon.

Tonight 21 Apr Butte/Blackfoot Region

Mostly cloudy in the evening then clearing. Lows in the upper 30s to mid 40s. South Winds 15 to 20 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Miller Lake Temperature Statistics

April Temperature

Helena Regional Airport (46 miles)

  • Lowest 19 April, 2026

    27 °F

  • Average April

    46.5 °F

  • Highest 7 April, 2026

    69.7 °F

Climate (2021–Present)

Helena Regional Airport (46 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    60.1 °F
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