McDonald Lake Weather Forecast

    • 67
    • 91

    Slight Chance Thunderstorms

    • 67
    • 91

    Sunny

    • 64
    • 92

    Mostly Sunny

    • 62
    • 85

    Mostly Sunny

    • 62
    • 85

    Mostly Sunny

    • 62
    • 86

    Mostly Sunny

Today 23 Jul Potomac/Seeley Lake Region

Mostly sunny. Patchy smoke through the day. Slight chance of rain early in the afternoon. Areas of rain and a slight chance of Thunderstorms late in the afternoon. Chance of precipitation 30 percent. Highs in the mid 80s to lower 90s.

Tonight 23 Jul Potomac/Seeley Lake Region

Mostly clear. Patchy smoke in the evening. Lows in the mid 50s to lower 60s.

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McDonald Lake Temperature Statistics

July Temperature

Missoula, Missoula International Airport (34.8 miles)

  • Lowest 2 July, 2026

    45.6 °F

  • Average July

    71 °F

  • Highest 17 July, 2026

    97.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (34.8 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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