Basin Weather Forecast

    • 43
    • 60

    Rain Showers Likely

    • 44
    • 65

    Slight Chance Rain Showers

    • 46
    • 71

    Mostly Sunny

    • 46
    • 74

    Mostly Sunny

    • 46
    • 72

    Partly Sunny

    • 47
    • 72

    Slight Chance Rain Showers

Today 15 Sep Elkhorn and Boulder Mountains

Cooler. Mostly cloudy with a 50 percent chance of rain Showers. Highs 50 to 60. Northwest Winds 5 to 10 Mph.

Tonight 15 Sep Elkhorn and Boulder Mountains

Mostly cloudy. Chance of Thunderstorms in the Evening, then chance of rain Showers after midnight. Lows 40 to 45. Northwest Winds up to 10 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Basin Temperature Statistics

September Temperature

Butte, Bert Mooney Airport (24.2 miles)

  • Lowest 12 September, 2025

    37 °F

  • Average September

    59.7 °F

  • Highest 3 September, 2025

    88 °F

Climate (2020–Present)

Butte, Bert Mooney Airport (24.2 miles)

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  • Average Low 2020–2025

    27.7 °F

  • Average 2020–2025

    41.7 °F

  • Average High 2020–2025

    55 °F
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