Marysville Weather Forecast

    • 53
    • 88

    Decreasing Clouds

    • 50
    • 88

    Mostly Sunny

    • 50
    • 88

    Mostly Sunny

    • 52
    • 89

    Partly Sunny

    • 53
    • 86

    Chance Rain Showers

    • 50
    • 82

    Chance Rain Showers

Today 20 Aug Teton Valley

Mostly sunny with a slight chance of rain Showers in the morning. Then mostly cloudy with a slight chance of Showers and Thunderstorms in the afternoon. Highs around 87.

Tonight 20 Aug Teton Valley

Partly cloudy. A slight chance of rain Showers in the evening. Lows 48 to 56.

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Marysville Temperature Statistics

August Temperature

Rexburg, Rexburg-Madison County Airport (24.9 miles)

  • Lowest 9 August, 2025

    44.7 °F

  • Average August

    69.8 °F

  • Highest 13 August, 2025

    95.6 °F

Climate (2020–Present)

Rexburg, Rexburg-Madison County Airport (24.9 miles)

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  • Average Low 2020–2025

    33.4 °F

  • Average 2020–2025

    45.4 °F

  • Average High 2020–2025

    57.5 °F
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