Willow Creek Reservoir Weather Forecast

    • 44
    • 68

    Increasing Clouds

    • 43
    • 69

    Chance Rain Showers

    • 39
    • 66

    Chance Rain Showers

    • 38
    • 63

    Partly Sunny

    • 41
    • 67

    Mostly Sunny

    • 41
    • 65

    Mostly Sunny

Today 11 Sep Missouri Headwaters

Cooler. Partly sunny. Slight chance of rain Showers late in the Morning, then chance of rain Showers and slight chance of Thunderstorms early in the afternoon. Highs in the upper 60s. North Winds up to 10 Mph. Gusts up to 25 Mph in the afternoon. Chance of precipitation 50 percent.

Tonight 11 Sep Missouri Headwaters

Mostly cloudy. Patchy fog after midnight. Lows in the mid 40s. North Winds up to 15 Mph with Gusts to around 30 Mph.

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Willow Creek Reservoir Temperature Statistics

September Temperature

Bozeman, Gallatin Field (26.7 miles)

  • Lowest 9 September, 2026

    37.9 °F

  • Average September

    61.3 °F

  • Highest 2 September, 2026

    83.6 °F

Climate (2021–2026)

Bozeman, Gallatin Field (26.7 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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