Tetrault Lake Weather Forecast

    • 50
    • 83

    Slight Chance Rain

    • 47
    • 74

    Rain

    • 44
    • 62

    Rain

    • 45
    • 62

    Rain Likely

    • 46
    • 68

    Chance Rain

    • 47
    • 75

    Chance Rain Showers

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

Tetrault Lake Temperature Statistics

May Temperature

Boundary County Airport (55.3 miles)

  • Lowest 21 May, 2026

    35.6 °F

  • Average May

    57.7 °F

  • Highest 25 May, 2026

    80.6 °F

Climate (2021–Present)

Boundary County Airport (55.3 miles)

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  • Average Low 2021–2026

    37.9 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    56.9 °F
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