Idaho Falls Weather Forecast

    • 48
    • 81

    Mostly Sunny

    • 53
    • 83

    Partly Sunny

    • 44
    • 72

    Slight Chance Rain Showers

    • 40
    • 62

    Partly Sunny

    • 41
    • 64

    Mostly Sunny

    • 42
    • 69

    Mostly Sunny

Today 27 Sep Upper Snake River Plain

Sunny. Highs 76 to 83. Northeast Winds up to 10 Mph. Shifting to south around 10 Mph in the afternoon.

Tonight 27 Sep Upper Snake River Plain

Mostly clear. Lows 43 to 53. South Winds around 10 Mph. Shifting to northeast after midnight.

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Idaho Falls Temperature Statistics

September Temperature

Idaho Falls Regional Airport (2.5 miles)

  • Lowest 10 September, 2022

    36 °F
  • Average September

    64.4 °F
  • Highest 3 September, 2022

    99 °F

Climate (2010–Present)

Idaho Falls Regional Airport (2.5 miles)

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  • Average Low 2010–Present

    33.1 °F
  • Average 2010–Present

    46 °F
  • Average High 2010–Present

    58.3 °F
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