Rainbow Ranch Airport Weather Forecast

    • 52
    • 76

    Increasing Clouds

    • 55
    • 78

    Mostly Cloudy

    • 56
    • 78

    Partly Sunny

    • 53
    • 77

    Mostly Sunny

    • 51
    • 75

    Sunny

    • 56
    • 81

    Mostly Sunny

Today 18 Sep Upper Snake River Plain

Sunny. Highs 72 to 79. Northeast Winds up to 10 Mph. Shifting to southwest in the afternoon.

Tonight 18 Sep Upper Snake River Plain

Partly cloudy. Lows 43 to 52. South Winds around 10 Mph. Shifting to northeast after midnight.

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Rainbow Ranch Airport Temperature Statistics

September Temperature

Idaho Falls Regional Airport (8.7 miles)

  • Lowest 12 September, 2025

    43 °F

  • Average September

    64.2 °F

  • Highest 3 September, 2025

    90 °F

Climate (2020–Present)

Idaho Falls Regional Airport (8.7 miles)

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  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    46.1 °F

  • Average High 2020–2025

    58.9 °F
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