Upper Thompson Lake Weather Forecast

    • 50
    • 77

    Chance Rain

    • 46
    • 65

    Rain Likely

    • 45
    • 57

    Chance Rain

    • 44
    • 59

    Slight Chance Rain

    • 46
    • 67

    Partly Sunny

    • 48
    • 71

    Partly Sunny

Today 29 May Kootenai/Cabinet Region

Partly cloudy. Highs in the upper 70s to mid 80s.

Tonight 29 May Kootenai/Cabinet Region

Mostly cloudy. A 20 percent chance of rain in the evening. Lows in the mid 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Thompson Lake Temperature Statistics

May Temperature

Kalispell, Glacier Park International Airport (42.9 miles)

  • Lowest 6 May, 2026

    29.6 °F

  • Average May

    53.3 °F

  • Highest 25 May, 2026

    83.6 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (42.9 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    57.2 °F
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