Rays Lake Weather Forecast

    • 41
    • 68

    Chance Rain Showers

    • 43
    • 73

    Mostly Sunny

    • 42
    • 76

    Sunny

    • 44
    • 79

    Mostly Sunny

    • 46
    • 79

    Chance Rain Showers

    • 46
    • 78

    Chance Rain Showers

Today 15 Sep Arco/Mud Lake Desert

Mostly sunny. A slight chance of rain Showers in the morning. Then a slight chance of Showers and Thunderstorms in the afternoon. Highs 63 to 71. Southwest Winds 10 to 15 Mph. Chance of precipitation 20 percent.

Tonight 15 Sep Arco/Mud Lake Desert

Partly cloudy. Lows 39 to 46. Northwest Winds 10 to 15 Mph. Shifting to northeast after midnight.

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Rays Lake Temperature Statistics

September Temperature

Rexburg, Rexburg-Madison County Airport (23 miles)

  • Lowest 12 September, 2025

    43 °F

  • Average September

    64.9 °F

  • Highest 2 September, 2025

    90 °F

Climate (2020–Present)

Rexburg, Rexburg-Madison County Airport (23 miles)

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  • Average Low 2020–2025

    33.5 °F

  • Average 2020–2025

    45.5 °F

  • Average High 2020–2025

    57.6 °F
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