Idaho Falls Weather Forecast

    • 36
    • 56

    Rain Showers Likely

    • 38
    • 57

    Chance Rain Showers

    • 43
    • 65

    Rain Showers Likely

    • 40
    • 52

    Rain Showers

    • 42
    • 57

    Chance Rain Showers

    • 40
    • 64

    Chance Rain Showers

Today 15 May Upper Snake River Plain

A chance of rain in the morning. Then rain Showers likely and a slight chance of Thunderstorms in the afternoon. Highs 51 to 59. Southwest Winds up to 10 Mph. Increasing to 10 to 15 Mph in the afternoon.

Tonight 15 May Upper Snake River Plain

Mostly cloudy with a slight chance of rain in the evening. Then partly cloudy after midnight. Lows 32 to 39. Southwest Winds around 10 Mph. Shifting to north up to 10 Mph after midnight. Chance of precipitation 20 percent.

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Idaho Falls Temperature Statistics

May Temperature

Idaho Falls Regional Airport (2.5 miles)

  • Lowest 2 May, 2025

    32.6 °F

  • Average May

    56.6 °F

  • Highest 10 May, 2025

    88.6 °F

Climate (2020–Present)

Idaho Falls Regional Airport (2.5 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    45.9 °F

  • Average High 2020–2025

    58.6 °F
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