Idaho Falls Regional Airport Weather Forecast

    • 22
    • 47

    Increasing Clouds

    • 21
    • 48

    Mostly Sunny

    • 31
    • 46

    Mostly Cloudy

    • 37
    • 51

    Rain Likely

    • 26
    • 47

    Chance Snow

    • 32
    • 41

    Rain/Snow Likely

Today 13 Dec Upper Snake River Plain

Mostly sunny. Patchy freezing fog in the morning. Highs 40 to 48. Southeast Winds up to 10 Mph. Shifting to east in the afternoon.

Tonight 13 Dec Upper Snake River Plain

Partly cloudy. Lows 21 to 31. Northeast Winds up to 10 Mph.

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Idaho Falls Regional Airport Temperature Statistics

December Temperature

Idaho Falls Regional Airport (0 miles)

  • Lowest 3 December, 2025

    9 °F

  • Average December

    35.2 °F

  • Highest 11 December, 2025

    54 °F

Climate (2020–Present)

Idaho Falls Regional Airport (0 miles)

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  • Average Low 2020–2025

    33.4 °F

  • Average 2020–2025

    46.3 °F

  • Average High 2020–2025

    59.1 °F
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