Beaver Lake Weather Forecast

    • 43
    • 58

    Rain Likely

    • 44
    • 70

    Partly Sunny

    • 44
    • 70

    Mostly Cloudy

    • 40
    • 58

    Chance Rain

    • 35
    • 55

    Chance Rain

    • 35
    • 56

    Chance Rain

Today 8 Sep Flathead/Mission Valleys

Areas of rain early in the Morning, then rain likely late in the morning. Areas of rain early in the afternoon. Chance of rain 70 percent. Highs in the upper 50s to mid 60s.

Tonight 8 Sep Flathead/Mission Valleys

Mostly clear. Patchy fog after midnight. Lows in the upper 30s to mid 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Beaver Lake Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (11.2 miles)

  • Lowest 1 September, 2026

    41.6 °F

  • Average September

    59.1 °F

  • Highest 1 September, 2026

    84.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (11.2 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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