French Lake Weather Forecast

    • 42
    • 45

    Rain

    • 48
    • 58

    Mostly Sunny

    • 49
    • 64

    Sunny

    • 49
    • 64

    Partly Sunny

    • 49
    • 62

    Partly Sunny

    • 47
    • 60

    Chance Rain

Today 15 Sep Lower Clark Fork Region

Rain likely in the Morning, then chance of rain Showers and a slight chance of Thunderstorms in the afternoon. Chance of precipitation 70 percent. Highs in the 60s.

Tonight 15 Sep Lower Clark Fork Region

Partly cloudy. Areas of fog after midnight. Lows in the 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

French Lake Temperature Statistics

September Temperature

Missoula, Missoula International Airport (39.8 miles)

  • Lowest 9 September, 2025

    48 °F

  • Average September

    67.9 °F

  • Highest 2 September, 2025

    96.1 °F

Climate (2020–Present)

Missoula, Missoula International Airport (39.8 miles)

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  • Average Low 2020–2025

    35.6 °F

  • Average 2020–2025

    47.1 °F

  • Average High 2020–2025

    59.3 °F
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