Marysville Weather Forecast

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    • 82

    Rain Showers

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    • 82

    Chance Thunderstorms

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    • 82

    Rain Showers Likely

    • 59
    • 79

    Slight Chance Thunderstorms

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    • 80

    Chance Rain Showers

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    • 83

    Chance Thunderstorms

Today 11 Aug Union

Showers with a chance of Thunderstorms in the Morning, then Showers with Thunderstorms likely in the afternoon. Some Thunderstorms may produce heavy rainfall in the morning. Some Thunderstorms may produce heavy rainfall in the afternoon. Humid with Highs in the lower 80s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 90 percent.

Tonight 11 Aug Union

Showers with Thunderstorms likely in the Evening, then Showers likely after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Lows in the mid 60s. West Winds 5 to 10 Mph. Chance of rain 100 percent.

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Marysville Temperature Statistics

August Temperature

Marysville Union County Airport (0.6 miles)

  • Lowest 4 August, 2026

    50 °F

  • Average August

    72.6 °F

  • Highest 6 August, 2026

    87.8 °F

Climate (2021–2026)

Marysville Union County Airport (0.6 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    62.6 °F
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