Portneuf River Slough Weather Forecast

    • 39
    • 71

    Decreasing Clouds

    • 40
    • 59

    Increasing Clouds

    • 46
    • 66

    Mostly Cloudy

    • 47
    • 69

    Partly Sunny

    • 41
    • 69

    Partly Sunny

    • 34
    • 58

    Partly Sunny

    • 39
    • 62

    Mostly Cloudy

Today 21 Mar Marsh and Arbon Highlands

Increasing Clouds. Highs 66 to 76.

Tonight 21 Mar Marsh and Arbon Highlands

Partly cloudy. Colder. Lows 35 to 43.

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Portneuf River Slough Temperature Statistics

March Temperature

Pocatello, Pocatello Regional Airport (16.2 miles)

  • Lowest 15 March, 2026

    17.7 °F

  • Average March

    44 °F

  • Highest 18 March, 2026

    77.6 °F

Climate (2021–Present)

Pocatello, Pocatello Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    61.7 °F
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