Potomac River - Saint Margaret Island Weather Forecast

    • 42
    • 46

    Mostly Cloudy

    • 53
    • 57

    Mostly Cloudy

    • 51
    • 69

    Rain Showers

    • 42
    • 55

    Slight Chance Rain Showers

    • 48
    • 62

    Mostly Sunny

    • 54
    • 67

    Mostly Cloudy

    • 41
    • 67

    Chance Rain Showers

Today 14 Mar St. Marys

Partly sunny. Highs around 50. Southeast Winds 5 to 10 Mph.

Tonight 14 Mar St. Marys

Mostly cloudy with a slight chance of very light drizzle. Patchy fog after midnight. Visibility one quarter mile or less at Times after midnight. Lows in the lower 40s. Southeast Winds around 5 Mph.

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  • Temperature Real-Time

Potomac River - Saint Margaret Island Temperature Statistics

March Temperature

St Marys County Airport (14.3 miles)

  • Lowest 3 March, 2025

    21.2 °F

  • Average March

    44.9 °F

  • Highest 1 March, 2025

    68 °F

Climate (2020–Present)

St Marys County Airport (14.3 miles)

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  • Average Low 2020–2025

    49.4 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    66.5 °F
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