Manhattan Weather Forecast

    • 42
    • 72

    Mostly Cloudy

    • 41
    • 77

    Chance Rain Showers

    • 35
    • 66

    Mostly Sunny

    • 37
    • 69

    Partly Sunny

    • 37
    • 68

    Mostly Sunny

    • 40
    • 76

    Mostly Sunny

Today 12 Sep Gallatin Valley

Partly sunny. Highs in the lower 70s. North Winds up to 10 Mph.

Tonight 12 Sep Gallatin Valley

Mostly cloudy. Lows in the lower 40s. Northeast Winds 5 to 10 Mph with Gusts to around 30 Mph.

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Manhattan Temperature Statistics

September Temperature

Bozeman, Gallatin Field (9.3 miles)

  • Lowest 9 September, 2026

    37.9 °F

  • Average September

    61.6 °F

  • Highest 10 September, 2026

    86 °F

Climate (2021–2026)

Bozeman, Gallatin Field (9.3 miles)

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  • Average Low 2021–2026

    31.3 °F

  • Average 2021–2026

    45 °F

  • Average High 2021–2026

    58.5 °F
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