Lakeside (Flathead Lake) Weather Forecast

    • 53
    • 70

    Chance Rain Showers

    • 52
    • 75

    Partly Sunny

    • 54
    • 76

    Partly Sunny

    • 54
    • 78

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 59
    • 86

    Partly Sunny

Today 30 Jun Flathead/Mission Valleys

Mostly cloudy. Slight chance of rain in the Morning, then chance of Showers and Thunderstorms in the afternoon. Chance of precipitation 50 percent. Highs in the mid 60s to lower 70s.

Tonight 30 Jun Flathead/Mission Valleys

Partly cloudy with a 20 percent chance of Showers and Thunderstorms in the Evening, then mostly cloudy after midnight. Lows in the mid 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lakeside (Flathead Lake) Temperature Statistics

June Temperature

Kalispell, Glacier Park International Airport (19.3 miles)

  • Lowest 14 June, 2026

    35.7 °F

  • Average June

    58.3 °F

  • Highest 20 June, 2026

    83.6 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (19.3 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.1 °F
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