Potomac River - Weir Creek Entrance Weather Forecast

    • 32
    • 48

    Mostly Sunny

    • 41
    • 50

    Partly Sunny

    • 32
    • 52

    Rain/Snow Likely

    • 21
    • 37

    Chance Rain/Snow

    • 29
    • 36

    Mostly Sunny

    • 28
    • 44

    Partly Sunny

    • 20
    • 36

    Chance Snow

Today 12 Jan Charles

Sunny. Highs in the mid 40s. Southwest Winds 5 to 10 Mph.

Tonight 12 Jan Charles

Mostly clear. Lows in the upper 20s. Southwest Winds around 5 Mph.

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  • Temperature Real-Time

Potomac River - Weir Creek Entrance Temperature Statistics

January Temperature

St Marys County Airport (19.9 miles)

  • Lowest 1 January, 2026

    24.3 °F

  • Average January

    40.5 °F

  • Highest 7 January, 2026

    65.7 °F

Climate (2021–Present)

St Marys County Airport (19.9 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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