Potomac River - Cornfield Harbor Weather Forecast

    • 56
    • 82

    Rain Showers

    • 50
    • 59

    Rain Showers Likely

    • 53
    • 59

    Mostly Sunny

    • 56
    • 63

    Partly Sunny

    • 58
    • 66

    Mostly Sunny

    • 58
    • 66

    Partly Sunny

Today 16 Oct St. Marys

Patchy fog in the morning. Mostly cloudy with a slight chance of Showers in the Morning, then mostly sunny in the afternoon. Highs in the mid 80s. Southwest Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 16 Oct St. Marys

A slight chance of Thunderstorms in the evening. Showers likely. Lows around 50. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 70 percent.

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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 7 October, 2026

    43 °F

  • Average October

    65.9 °F

  • Highest 2 October, 2026

    88 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    68.6 °F
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