American Falls Weather Forecast

    • 52
    • 78

    Decreasing Clouds

    • 53
    • 81

    Partly Sunny

    • 44
    • 69

    Mostly Sunny

    • 43
    • 64

    Mostly Sunny

    • 46
    • 70

    Partly Sunny

    • 48
    • 74

    Mostly Sunny

Today 11 Sep Lower Snake River Plain

Mostly sunny. A slight chance of rain Showers in the morning. Breezy. Highs 76 to 83. Southwest Winds 10 to 15 Mph shifting to west 15 to 25 Mph in the afternoon.

Tonight 11 Sep Lower Snake River Plain

Mostly clear. Colder. Lows 43 to 53. Southwest Winds 10 to 15 Mph. Shifting to west after midnight.

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American Falls Temperature Statistics

September Temperature

Pocatello, Pocatello Regional Airport (16.8 miles)

  • Lowest 8 September, 2026

    37 °F

  • Average September

    65.1 °F

  • Highest 6 September, 2026

    88.6 °F

Climate (2021–2026)

Pocatello, Pocatello Regional Airport (16.8 miles)

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  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    61.9 °F
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