Great Northern Mountain Weather Forecast

    • 42
    • 48

    Rain

    • 40
    • 49

    Rain

    • 37
    • 44

    Rain Showers

    • 37
    • 44

    Chance Rain

    • 40
    • 51

    Partly Sunny

    • 41
    • 53

    Partly Sunny

Today 5 Sep West Glacier Region

Mostly cloudy with a 50 percent chance of Areas of rain. Areas of fog early in the morning. Patchy fog late in the morning. Highs in the upper 50s to mid 60s.

Tonight 5 Sep West Glacier Region

Slight chance of Thunderstorms. Chance of rain Showers in the Evening, then rain Showers likely after midnight. Chance of precipitation 70 percent. Lows in the 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Northern Mountain Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (22.4 miles)

  • Lowest 1 September, 2026

    41.6 °F

  • Average September

    60.5 °F

  • Highest 1 September, 2026

    84.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (22.4 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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