Arrastra Mountain Weather Forecast

    • 28
    • 35

    Rain/Snow Likely

    • 24
    • 32

    Blizzard

    • 19
    • 30

    Blizzard

    • 25
    • 29

    Snow

    • 18
    • 29

    Snow Likely

    • 18
    • 21

    Chance Snow

Today 15 Dec Butte/Blackfoot Region

Mostly cloudy. A 20 percent chance of rain late in the afternoon. Highs in the 40s to lower 50s. Southwest Winds 15 to 20 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 15 Dec Butte/Blackfoot Region

Mostly cloudy with a 50 percent chance of rain. Lows in the 30s. Windy with southwest Winds 20 to 30 Mph with Gusts to around 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arrastra Mountain Temperature Statistics

December Temperature

Helena Regional Airport (51 miles)

  • Lowest 1 December, 2025

    3 °F

  • Average December

    35.4 °F

  • Highest 10 December, 2025

    61 °F

Climate (2020–Present)

Helena Regional Airport (51 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    47.7 °F

  • Average High 2020–2025

    59.5 °F
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