Grob Lake Weather Forecast

    • 45
    • 55

    Chance Rain

    • 46
    • 57

    Rain

    • 42
    • 59

    Rain

    • 30
    • 54

    Chance Rain

    • 31
    • 53

    Partly Sunny

    • 34
    • 55

    Mostly Cloudy

Today 18 Mar Kootenai/Cabinet Region

Rain likely in the Morning, then Areas of rain in the afternoon. Chance of rain 70 percent. Highs in the upper 40s to mid 50s.

Tonight 18 Mar Kootenai/Cabinet Region

Mostly cloudy with a 40 percent chance of Areas of rain. Lows in the upper 30s to mid 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grob Lake Temperature Statistics

March Temperature

Boundary County Airport (54.1 miles)

  • Lowest 15 March, 2026

    19.4 °F

  • Average March

    38 °F

  • Highest 8 March, 2026

    57.2 °F

Climate (2021–Present)

Boundary County Airport (54.1 miles)

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  • Average Low 2021–2026

    37.8 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    56.8 °F
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