Potomac River - McKay Cove Entrance Weather Forecast

    • 57
    • 73

    Thunderstorms

    • 49
    • 61

    Rain Showers

    • 48
    • 53

    Chance Rain Showers

    • 50
    • 60

    Partly Sunny

    • 56
    • 63

    Chance Rain Showers

    • 56
    • 69

    Chance Rain Showers

Today 24 Apr St. Marys

Mostly sunny. Scattered Showers and Thunderstorms this afternoon. Highs in the upper 70s. Northwest Winds around 5 Mph, becoming northeast this afternoon. Chance of rain 50 percent.

Tonight 24 Apr St. Marys

Partly cloudy. Scattered Showers with isolated Thunderstorms in the evening. Lows in the mid 50s. Southeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

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Potomac River - McKay Cove Entrance Temperature Statistics

April Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (6.8 miles)

  • Lowest 9 April, 2026

    33.1 °F

  • Average April

    62 °F

  • Highest 16 April, 2026

    88 °F

Climate (2021–Present)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (6.8 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    68.9 °F
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