Potomac River - Cornfield Harbor Weather Forecast

    • 55
    • 71

    Mostly Sunny

    • 55
    • 60

    Partly Sunny

    • 55
    • 63

    Mostly Cloudy

    • 58
    • 66

    Mostly Cloudy

    • 61
    • 68

    Partly Sunny

    • 63
    • 70

    Mostly Cloudy

Today 30 Oct St. Marys

Sunny. Highs in the mid 70s. West Winds 5 to 10 Mph, becoming northwest in the afternoon.

Tonight 30 Oct St. Marys

Mostly clear. Lows in the upper 40s. North Winds 5 to 10 Mph.

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Potomac River - Cornfield Harbor Temperature Statistics

October Temperature

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

  • Lowest 26 October, 2026

    42.1 °F

  • Average October

    62.6 °F

  • Highest 14 October, 2026

    90 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    51.7 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    68.5 °F
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