Gallatin Gateway Weather Forecast

    • 51
    • 80

    Chance Thunderstorms

    • 51
    • 79

    Partly Sunny

    • 48
    • 76

    Chance Rain Showers

    • 49
    • 75

    Rain Showers Likely

    • 47
    • 72

    Rain Showers Likely

    • 45
    • 67

    Rain Showers

    • 45
    • 67

    Chance Thunderstorms

Today 7 Sep Gallatin Valley

Mostly cloudy in the morning then becoming partly cloudy. Slight chance of rain Showers in the Morning, then slight chance of Thunderstorms in the afternoon. Areas of smoke through the day. Haze in the afternoon. Highs around 80. South Winds up to 10 Mph shifting to the west in the afternoon. Chance of precipitation 20 percent.

Tonight 7 Sep Gallatin Valley

Haze in the evening. Mostly cloudy with a 30 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows around 50. West Winds 5 to 10 Mph shifting to the south after midnight.

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Gallatin Gateway Temperature Statistics

September Temperature

Bozeman, Gallatin Field (13.7 miles)

  • Lowest 5 September, 2025

    44.1 °F

  • Average September

    64.8 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Bozeman, Gallatin Field (13.7 miles)

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  • Average Low 2020–2025

    30.6 °F

  • Average 2020–2025

    44.2 °F

  • Average High 2020–2025

    57.7 °F
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