Potomac River - Cornfield Harbor Weather Forecast

    • 54
    • 68

    Rain Showers

    • 49
    • 60

    Mostly Sunny

    • 51
    • 62

    Sunny

    • 50
    • 62

    Sunny

    • 53
    • 66

    Mostly Sunny

    • 51
    • 62

    Mostly Sunny

Today 6 Nov St. Marys

Showers and scattered Thunderstorms in the Morning, then scattered Showers with isolated Thunderstorms in the afternoon. Patchy fog. Highs in the upper 60s. Southwest Winds 5 to 10 Mph, becoming north in the afternoon. Chance of rain near 100 percent.

Tonight 6 Nov St. Marys

Partly cloudy with isolated Showers in the Evening, then mostly cloudy after midnight. Lows in the upper 40s. North Winds around 5 Mph, increasing to northwest 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of rain 20 percent.

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Potomac River - Cornfield Harbor Temperature Statistics

November Temperature

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

  • Lowest 2 November, 2026

    44.1 °F

  • Average November

    56.1 °F

  • Highest 3 November, 2026

    72 °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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