Island Lake Weather Forecast

    • 56
    • 87

    Increasing Clouds

    • 52
    • 82

    Chance Rain

    • 50
    • 79

    Slight Chance Rain

    • 48
    • 73

    Chance Rain Showers

    • 49
    • 71

    Chance Rain

    • 47
    • 69

    Rain Likely

Today 6 Sep Kootenai/Cabinet Region

Mostly sunny. Patchy smoke until late Afternoon, then Areas of smoke late in the afternoon. Highs in the upper 80s to mid 90s.

Tonight 6 Sep Kootenai/Cabinet Region

Partly cloudy. Areas of smoke. Lows in the 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Lake Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (32.3 miles)

  • Lowest 3 September, 2025

    53.6 °F

  • Average September

    75.8 °F

  • Highest 2 September, 2025

    93.2 °F

Climate (2020–Present)

Kalispell, Glacier Park International Airport (32.3 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    45.1 °F

  • Average High 2020–2025

    56.8 °F
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