Idaho Falls Regional Airport Weather Forecast

    • 40
    • 75

    Breezy

    • 35
    • 67

    Mostly Sunny

    • 41
    • 75

    Mostly Sunny

    • 41
    • 76

    Mostly Sunny

    • 40
    • 74

    Chance Rain

    • 39
    • 76

    Mostly Sunny

Today 13 Sep Upper Snake River Plain

Sunny, breezy. Highs 69 to 76. Southwest Winds 15 to 25 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 13 Sep Upper Snake River Plain

Mostly clear. Breezy, Colder. Lows 34 to 44. Southwest Winds 15 to 25 Mph.

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Idaho Falls Regional Airport Temperature Statistics

September Temperature

Idaho Falls Regional Airport (0 miles)

  • Lowest 8 September, 2026

    34.6 °F

  • Average September

    63.1 °F

  • Highest 6 September, 2026

    86.6 °F

Climate (2021–2026)

Idaho Falls Regional Airport (0 miles)

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  • Average Low 2021–2026

    33.8 °F

  • Average 2021–2026

    46.9 °F

  • Average High 2021–2026

    60 °F
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