Potomac River - Cornfield Harbor Weather Forecast

    • 82
    • 91

    Sunny

    • 83
    • 91

    Mostly Sunny

    • 80
    • 93

    Chance Thunderstorms

    • 79
    • 91

    Chance Thunderstorms

    • 78
    • 89

    Chance Thunderstorms

    • 76
    • 85

    Chance Thunderstorms

Today 2 Jul St. Marys

Sunny, hot with Highs in the upper 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 113.

Tonight 2 Jul St. Marys

Mostly clear. Lows in the mid 70s. Southwest Winds 5 to 10 Mph.

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Potomac River - Cornfield Harbor Temperature Statistics

July Temperature

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

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  • Average July

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Climate (2021–2026)

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

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  • Average Low 2021–2026

    51.9 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    68.7 °F
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