St Marys River State Park Weather Forecast

    • 57
    • 70

    Mostly Sunny

    • 52
    • 75

    Rain Showers

    • 46
    • 67

    Mostly Sunny

    • 52
    • 70

    Chance Rain Showers

    • 45
    • 66

    Mostly Sunny

    • 44
    • 62

    Partly Sunny

    • 48
    • 62

    Partly Sunny

Today 18 Oct St. Marys

Sunny. Highs around 70. South Winds 5 to 10 Mph.

Tonight 18 Oct St. Marys

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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St Marys River State Park Temperature Statistics

October Temperature

St Marys County Airport (3.1 miles)

  • Lowest 16 October, 2025

    43.7 °F

  • Average October

    61.6 °F

  • Highest 7 October, 2025

    80.8 °F

Climate (2020–Present)

St Marys County Airport (3.1 miles)

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  • Average Low 2020–2025

    49.7 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    66.8 °F
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