Tetrault Lake Weather Forecast

    • 58
    • 91

    Partly Sunny

    • 60
    • 90

    Mostly Cloudy

    • 59
    • 89

    Chance Thunderstorms

    • 59
    • 93

    Slight Chance Thunderstorms

    • 60
    • 92

    Chance Rain

    • 62
    • 95

    Mostly Sunny

    • 62
    • 95

    Mostly Sunny

Today 13 Jul Kootenai/Cabinet Region

Mostly cloudy. Highs in the upper 80s to mid 90s.

Tonight 13 Jul Kootenai/Cabinet Region

Partly cloudy. Lows in the mid 50s to lower 60s.

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  • Temperature Real-Time

Tetrault Lake Temperature Statistics

July Temperature

Boundary County Airport (55.3 miles)

  • Lowest 2 July, 2026

    46.4 °F

  • Average July

    69.8 °F

  • Highest 7 July, 2026

    87.8 °F

Climate (2021–2026)

Boundary County Airport (55.3 miles)

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  • Average Low 2021–2026

    37.8 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    56.6 °F
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