Terreton Weather Forecast

    • 58
    • 87

    Mostly Sunny

    • 59
    • 94

    Mostly Sunny

    • 58
    • 94

    Mostly Sunny

    • 60
    • 95

    Mostly Sunny

    • 58
    • 94

    Slight Chance Thunderstorms

    • 58
    • 92

    Mostly Sunny

Today 23 Jul Arco/Mud Lake Desert

Sunny. Highs 82 to 91. Light and variable Winds. Becoming southwest up to 10 Mph in the afternoon.

Tonight 23 Jul Arco/Mud Lake Desert

Mostly clear. Lows 57 to 65. Southwest Winds up to 10 Mph. Shifting to northeast after midnight.

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Terreton Temperature Statistics

July Temperature

Idaho Falls Regional Airport (28.6 miles)

  • Lowest 1 July, 2026

    43.6 °F

  • Average July

    72.9 °F

  • Highest 12 July, 2026

    103.6 °F

Climate (2021–2026)

Idaho Falls Regional Airport (28.6 miles)

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  • Average Low 2021–2026

    33.8 °F

  • Average 2021–2026

    46.8 °F

  • Average High 2021–2026

    59.8 °F
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