Duncan Airport Weather Forecast

    • 23
    • 45

    Mostly Sunny

    • 27
    • 45

    Mostly Cloudy

    • 32
    • 44

    Snow Likely

    • 17
    • 42

    Snow Likely

    • -2
    • 27

    Snow Likely

    • -4
    • 9

    Snow Likely

    • -2
    • 10

    Chance Snow

Today 29 Jan Upper Blackfoot and MacDonald Pass

Sunny. Highs 30 to 35. West Winds 5 to 15 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 29 Jan Upper Blackfoot and MacDonald Pass

Mostly clear. Lows 15 to 25. West Winds 5 to 15 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duncan Airport Temperature Statistics

January Temperature

Helena Regional Airport (8.7 miles)

  • Lowest 20 January, 2025

    -10.2 °F

  • Average January

    21.6 °F

  • Highest 16 January, 2025

    52.6 °F

Climate (2020–Present)

Helena Regional Airport (8.7 miles)

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  • Average Low 2020–2025

    36.2 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.3 °F
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