Potomac River - Cornfield Harbor Weather Forecast

    • 77
    • 88

    Chance Thunderstorms

    • 75
    • 89

    Rain Showers Likely

    • 73
    • 82

    Mostly Sunny

    • 73
    • 87

    Chance Rain Showers

    • 70
    • 80

    Rain Showers Likely

    • 69
    • 77

    Chance Rain Showers

Today 11 Jun St. Marys

Mostly sunny. Hot with Highs in the mid 90s. Southwest Winds around 5 Mph.

Tonight 11 Jun St. Marys

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the mid 70s. West Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Cornfield Harbor Temperature Statistics

June Temperature

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

  • Lowest 3 June, 2026

    54 °F

  • Average June

    73 °F

  • Highest 6 June, 2026

    91 °F

Climate (2021–Present)

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

    68.8 °F
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