Portneuf River Slough Weather Forecast

    • 40
    • 81

    Chance Rain Showers

    • 41
    • 65

    Mostly Sunny

    • 38
    • 67

    Mostly Sunny

    • 32
    • 59

    Partly Sunny

    • 30
    • 50

    Partly Sunny

    • 32
    • 56

    Mostly Sunny

Today 13 May Marsh and Arbon Highlands

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Windy. Highs 76 to 86. Southwest Winds around 30 Mph in the afternoon.

Tonight 13 May Marsh and Arbon Highlands

Mostly clear. Windy. Much Colder. Lows 34 to 44. West Winds around 30 Mph with Gusts to around 45 Mph in the evening.

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Portneuf River Slough Temperature Statistics

May Temperature

Pocatello, Pocatello Regional Airport (16.2 miles)

  • Lowest 1 May, 2026

    25.6 °F

  • Average May

    56.2 °F

  • Highest 10 May, 2026

    81 °F

Climate (2021–Present)

Pocatello, Pocatello Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    35.4 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    61.9 °F
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