Smiley Slough Weather Forecast

    • 55
    • 97

    Slight Chance Thunderstorms

    • 51
    • 91

    Mostly Sunny

    • 49
    • 91

    Mostly Sunny

    • 50
    • 92

    Sunny

    • 53
    • 94

    Mostly Sunny

    • 55
    • 96

    Partly Sunny

    • 56
    • 96

    Mostly Sunny

Today 19 Aug Lower Clark Fork Region

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

Tonight 19 Aug Lower Clark Fork Region

Partly cloudy then becoming mostly cloudy late in the evening then becoming partly cloudy. Chance of Showers and Thunderstorms in the Evening, then slight chance of rain after midnight. Chance of precipitation 40 percent. Lows in the 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Smiley Slough Temperature Statistics

August Temperature

Mullan Pass, Mullan Pass Vor (37.3 miles)

  • Lowest 8 August, 2025

    40.6 °F

  • Average August

    60 °F

  • Highest 11 August, 2025

    79.6 °F

Climate (2020–Present)

Mullan Pass, Mullan Pass Vor (37.3 miles)

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  • Average Low 2020–2025

    33.6 °F

  • Average 2020–2025

    39.6 °F

  • Average High 2020–2025

    46 °F
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