Gallatin Gateway Weather Forecast

    • 42
    • 67

    Rain Showers

    • 41
    • 68

    Mostly Sunny

    • 47
    • 77

    Mostly Sunny

    • 50
    • 81

    Mostly Sunny

    • 44
    • 72

    Chance Rain Showers

    • 40
    • 64

    Chance Rain Showers

Today 7 Sep Gallatin Valley

Breezy, cooler. Areas of fog in the morning. Mostly cloudy with chance of rain Showers and slight chance of Thunderstorms in the Morning, then mostly sunny in the afternoon. Highs in the mid 60s. Southwest Winds 5 to 15 Mph with Gusts to around 30 Mph increasing to west 15 to 25 Mph with Gusts to around 40 Mph in the afternoon. Chance of precipitation 50 percent.

Tonight 7 Sep Gallatin Valley

Mostly clear. Lows in the lower 40s. West Winds 10 to 15 Mph with Gusts to around 35 Mph becoming southwest up to 5 Mph after midnight.

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Gallatin Gateway Temperature Statistics

September Temperature

Bozeman, Gallatin Field (13.7 miles)

  • Lowest 1 September, 2026

    44.7 °F

  • Average September

    64.2 °F

  • Highest 2 September, 2026

    83.6 °F

Climate (2021–2026)

Bozeman, Gallatin Field (13.7 miles)

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  • Average Low 2021–2026

    31.3 °F

  • Average 2021–2026

    45 °F

  • Average High 2021–2026

    58.6 °F
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