St Marys River State Park Weather Forecast

    • 19
    • 32

    Sunny

    • 33
    • 41

    Mostly Sunny

    • 28
    • 51

    Partly Sunny

    • 15
    • 39

    Chance Snow

    • 16
    • 22

    Snow Likely

    • 15
    • 26

    Chance Snow

    • 11
    • 27

    Partly Sunny

Today 20 Jan St. Marys

Sunny. Highs in the lower 30s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 20 Jan St. Marys

Clear. Lows around 19. North Winds around 5 Mph, becoming northeast after midnight.

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St Marys River State Park Temperature Statistics

January Temperature

St Marys County Airport (3.1 miles)

  • Lowest 16 January, 2026

    20.7 °F

  • Average January

    39.7 °F

  • Highest 7 January, 2026

    65.7 °F

Climate (2021–Present)

St Marys County Airport (3.1 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    66.7 °F
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