Diamond Lake Weather Forecast

    • 44
    • 58

    Partly Sunny

    • 46
    • 59

    Partly Sunny

    • 46
    • 60

    Slight Chance Thunderstorms

    • 46
    • 59

    Slight Chance Thunderstorms

    • 48
    • 64

    Slight Chance Thunderstorms

    • 49
    • 66

    Mostly Sunny

Today 14 Aug West Glacier Region

Partly cloudy. A 20 percent chance of rain in the morning. Highs in the 70s. Southwest Winds to 15 Mph in the afternoon.

Tonight 14 Aug West Glacier Region

Partly cloudy. Lows in the upper 40s to mid 50s.

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Diamond Lake Temperature Statistics

August Temperature

Missoula, Missoula International Airport (65.9 miles)

  • Lowest 8 August, 2025

    47.6 °F

  • Average August

    67.2 °F

  • Highest 12 August, 2025

    93.9 °F

Climate (2020–Present)

Missoula, Missoula International Airport (65.9 miles)

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  • Average Low 2020–2025

    35.5 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    59.2 °F
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