Halfmoon Lake Weather Forecast

    • 52
    • 91

    Chance Thunderstorms

    • 47
    • 83

    Chance Rain

    • 41
    • 65

    Rain Showers

    • 40
    • 59

    Rain Showers Likely

    • 40
    • 65

    Chance Rain

    • 41
    • 71

    Partly Sunny

Today 28 May West Glacier Region

Mostly sunny in the Morning, then mostly cloudy with a 50 percent chance of Showers and Thunderstorms in the afternoon. Highs in the 80s.

Tonight 28 May West Glacier Region

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy with a slight chance of rain after midnight. Chance of precipitation 20 percent. Lows in the 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Halfmoon Lake Temperature Statistics

May Temperature

Kalispell, Glacier Park International Airport (16.2 miles)

  • Lowest 6 May, 2026

    29.6 °F

  • Average May

    52.4 °F

  • Highest 25 May, 2026

    82 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (16.2 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.2 °F
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