Portneuf River Slough Weather Forecast

    • 29
    • 43

    Mostly Cloudy

    • 29
    • 46

    Mostly Cloudy

    • 28
    • 42

    Mostly Sunny

    • 27
    • 44

    Partly Sunny

    • 28
    • 46

    Partly Sunny

    • 29
    • 50

    Mostly Sunny

    • 29
    • 50

    Partly Sunny

Today 31 Jan Marsh and Arbon Highlands

Mostly sunny. Highs 38 to 46.

Tonight 31 Jan Marsh and Arbon Highlands

Decreasing Clouds. Lows 22 to 32.

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Portneuf River Slough Temperature Statistics

January Temperature

Pocatello, Pocatello Regional Airport (16.2 miles)

  • Lowest 26 January, 2026

    8.7 °F

  • Average January

    29.3 °F

  • Highest 3 January, 2026

    51.7 °F

Climate (2021–Present)

Pocatello, Pocatello Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    61.4 °F
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