Hyalite Reservoir Weather Forecast

    • 34
    • 79

    Thunderstorms Likely

    • 34
    • 60

    Breezy

    • 33
    • 61

    Partly Sunny

    • 26
    • 53

    Snow

    • 24
    • 39

    Snow Showers Likely

    • 26
    • 45

    Slight Chance Snow

Today 13 May Gallatin and Madison County Mountains and Centennial Mountains

Windy. Mostly sunny in the Morning, then slight chance of Thunderstorms early in the afternoon. Partly sunny with chance of Thunderstorms late in the afternoon. Highs 67 to 79. South Winds 10 to 15 Mph with Gusts to around 50 Mph increasing to 25 to 35 Mph with Gusts to around 70 Mph in the afternoon. Chance of Thunderstorms 50 percent.

Tonight 13 May Gallatin and Madison County Mountains and Centennial Mountains

Windy, Colder. Mostly cloudy with a 50 percent chance of Thunderstorms in the Evening, then mostly clear after midnight. Lows 28 to 36. Southwest Winds 20 to 30 Mph becoming west 10 to 15 Mph after midnight. Gusts up to 65 Mph.

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Hyalite Reservoir Temperature Statistics

May Temperature

Bozeman, Gallatin Field (23 miles)

  • Lowest 6 May, 2026

    20.6 °F

  • Average May

    51 °F

  • Highest 10 May, 2026

    78.7 °F

Climate (2021–Present)

Bozeman, Gallatin Field (23 miles)

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  • Average Low 2021–2026

    31.3 °F

  • Average 2021–2026

    45.1 °F

  • Average High 2021–2026

    58.6 °F
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