Peterson Lake Weather Forecast

    • 52
    • 73

    Mostly Sunny

    • 51
    • 70

    Areas Smoke

    • 57
    • 69

    Partly Sunny

    • 58
    • 72

    Partly Sunny

    • 58
    • 72

    Partly Sunny

    • 58
    • 72

    Chance Rain

    • 56
    • 72

    Chance Rain Showers

Today 18 Jul Bitterroot/Sapphire Mountains

Sunny until late Afternoon, then mostly cloudy with a 40 percent chance of Showers and Thunderstorms late in the afternoon. Highs in the 80s to lower 90s.

Tonight 18 Jul Bitterroot/Sapphire Mountains

Partly cloudy. Patchy smoke through the night. A 20 percent chance of Showers and Thunderstorms in the evening. Some Thunderstorms may produce gusty Winds, small Hail, and heavy rainfall. Lows in the 50s.

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Peterson Lake Temperature Statistics

July Temperature

Missoula, Missoula International Airport (20.5 miles)

  • Lowest 2 July, 2026

    45.6 °F

  • Average July

    69.9 °F

  • Highest 11 July, 2026

    95.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (20.5 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    59.7 °F
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