Portneuf River Slough Weather Forecast

    • 45
    • 70

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 50
    • 76

    Mostly Sunny

    • 50
    • 76

    Partly Sunny

    • 53
    • 79

    Partly Sunny

    • 50
    • 76

    Partly Sunny

Today 30 Sep Marsh and Arbon Highlands

Sunny. Highs 67 to 77.

Tonight 30 Sep Marsh and Arbon Highlands

Mostly clear. Lows 39 to 49.

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Portneuf River Slough Temperature Statistics

September Temperature

Pocatello, Pocatello Regional Airport (16.2 miles)

  • Lowest 15 September, 2026

    30.7 °F

  • Average September

    61.6 °F

  • Highest 6 September, 2026

    88.6 °F

Climate (2021–2026)

Pocatello, Pocatello Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    61.9 °F
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