Potomac River - Cornish Point Weather Forecast

    • 45
    • 50

    Decreasing Clouds

    • 57
    • 57

    Mostly Cloudy

    • 51
    • 69

    Rain Showers

    • 44
    • 54

    Mostly Sunny

    • 49
    • 61

    Mostly Sunny

    • 55
    • 67

    Mostly Cloudy

Today 14 Mar St. Marys

Mostly cloudy. Highs in the lower 50s. East Winds around 5 Mph.

Tonight 14 Mar St. Marys

Mostly cloudy. Patchy drizzle after midnight. 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 - Cornish Point Temperature Statistics

March Temperature

St Marys County Airport (10.6 miles)

  • Lowest 3 March, 2025

    21.2 °F

  • Average March

    44.2 °F

  • Highest 1 March, 2025

    68 °F

Climate (2020–Present)

St Marys County Airport (10.6 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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