Idaho Falls Regional Airport Weather Forecast

    • 47
    • 75

    Slight Chance Rain

    • 40
    • 68

    Partly Sunny

    • 40
    • 69

    Sunny

    • 42
    • 71

    Sunny

    • 43
    • 73

    Mostly Sunny

    • 43
    • 73

    Partly Sunny

Today 27 Sep Upper Snake River Plain

Mostly cloudy. Highs 68 to 75. Northeast Winds up to 10 Mph. Shifting to south in the afternoon.

Tonight 27 Sep Upper Snake River Plain

Mostly cloudy. A chance of rain Showers and a slight chance of Thunderstorms after midnight. Lows 43 to 51. Northeast Winds up to 10 Mph. Chance of precipitation 40 percent.

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Idaho Falls Regional Airport Temperature Statistics

September Temperature

Idaho Falls Regional Airport (0 miles)

  • Lowest 15 September, 2026

    32.6 °F

  • Average September

    61 °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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