Rays Lake Weather Forecast

    • 37
    • 75

    Breezy

    • 36
    • 68

    Mostly Sunny

    • 40
    • 74

    Mostly Sunny

    • 41
    • 76

    Mostly Sunny

    • 40
    • 74

    Chance Rain

    • 39
    • 75

    Mostly Sunny

Today 13 Sep Arco/Mud Lake Desert

Sunny. Very windy. Highs 67 to 75. Southwest Winds 10 to 15 Mph. Increasing to 25 to 35 Mph in the afternoon.

Tonight 13 Sep Arco/Mud Lake Desert

Mostly clear. Breezy, Colder. Lows 32 to 39. Southwest Winds 15 to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rays Lake Temperature Statistics

September Temperature

Rexburg, Rexburg-Madison County Airport (23 miles)

  • Lowest 8 September, 2026

    36.6 °F

  • Average September

    63.1 °F

  • Highest 6 September, 2026

    84.7 °F

Climate (2021–2026)

Rexburg, Rexburg-Madison County Airport (23 miles)

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  • Average Low 2021–2026

    34.4 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    58.6 °F
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