Atomic City Weather Forecast

    • 16
    • 35

    Mostly Sunny

    • 18
    • 36

    Partly Sunny

    • 17
    • 38

    Mostly Cloudy

    • 16
    • 41

    Mostly Sunny

    • 15
    • 39

    Mostly Sunny

    • 14
    • 37

    Mostly Sunny

Today 11 Jan Arco/Mud Lake Desert

Mostly sunny. Patchy fog in the morning. Highs around 35. Northeast Winds up to 10 Mph in the morning. Becoming light and variable.

Tonight 11 Jan Arco/Mud Lake Desert

Mostly clear. Lows 15 to 22. Light and variable Winds.

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Atomic City Temperature Statistics

January Temperature

Idaho Falls Regional Airport (37.3 miles)

  • Lowest 9 January, 2026

    18 °F

  • Average January

    33.4 °F

  • Highest 3 January, 2026

    48 °F

Climate (2021–Present)

Idaho Falls Regional Airport (37.3 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    59.3 °F
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