Alder Weather Forecast

    • 42
    • 62

    Rain Showers Likely

    • 42
    • 65

    Chance Rain Showers

    • 42
    • 71

    Mostly Sunny

    • 44
    • 76

    Sunny

    • 47
    • 76

    Partly Sunny

    • 46
    • 77

    Partly Sunny

    • 42
    • 72

    Partly Sunny

Today 15 Sep Beaverhead and Western Madison below 6000ft

Cooler. Mostly cloudy. Patchy fog in the morning. Slight chance of rain in the Morning, then chance of rain Showers and slight chance of Thunderstorms in the afternoon. Highs 60 to 65. West Winds up to 10 Mph. Chance of precipitation 50 percent.

Tonight 15 Sep Beaverhead and Western Madison below 6000ft

Mostly cloudy with slight chance of Thunderstorms in the Evening, then partly cloudy with slight chance of rain Showers after midnight. Patchy fog after midnight. Lows around 40. North Winds up to 10 Mph. Chance of precipitation 20 percent.

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Alder Temperature Statistics

September Temperature

Dillon, Dillon Airport (21.7 miles)

  • Lowest 5 September, 2025

    42.1 °F

  • Average September

    61.8 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Dillon, Dillon Airport (21.7 miles)

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  • Average Low 2020–2025

    30.7 °F

  • Average 2020–2025

    42.9 °F

  • Average High 2020–2025

    55.9 °F
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