Rainbow Lake Weather Forecast

    • 54
    • 71

    Rain Likely

    • 49
    • 61

    Chance Rain

    • 52
    • 70

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

    • 49
    • 72

    Partly Sunny

    • 48
    • 67

    Slight Chance Rain

Today 14 Sep Kootenai/Cabinet Region

Mostly cloudy. Areas of fog in the morning. A 40 percent chance of rain in the afternoon. Highs in the mid 70s to lower 80s.

Tonight 14 Sep Kootenai/Cabinet Region

Rain likely in the Evening, then a chance of rain after midnight. Chance of rain 70 percent. Lows in the mid 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rainbow Lake Temperature Statistics

September Temperature

Mullan Pass, Mullan Pass Vor (42.3 miles)

  • Lowest 11 September, 2025

    46.9 °F

  • Average September

    64.8 °F

  • Highest 2 September, 2025

    84 °F

Climate (2020–Present)

Mullan Pass, Mullan Pass Vor (42.3 miles)

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  • Average Low 2020–2025

    33.7 °F

  • Average 2020–2025

    39.7 °F

  • Average High 2020–2025

    46.1 °F
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