Marysville Weather Forecast

    • 39
    • 58

    Becoming Sunny

    • 51
    • 68

    Partly Sunny

    • 55
    • 80

    Chance Rain Showers

    • 54
    • 74

    Slight Chance Rain Showers

    • 65
    • 87

    Partly Sunny

    • 58
    • 87

    Chance Rain Showers

Today 14 May St. Clair

Partly cloudy. Highs around 60. North Winds 10 to 20 Mph.

Tonight 14 May St. Clair

Mostly clear. Lows in the upper 30s. North Winds up to 5 Mph, becoming west after midnight.

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Marysville Temperature Statistics

May Temperature

St Clair County International Airport (1.9 miles)

  • Lowest 12 May, 2026

    30.2 °F

  • Average May

    49.4 °F

  • Highest 4 May, 2026

    75.2 °F

Climate (2021–Present)

St Clair County International Airport (1.9 miles)

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  • Average Low 2021–2026

    39.8 °F

  • Average 2021–2026

    49.5 °F

  • Average High 2021–2026

    58.7 °F
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