Chesapeake Bay - Potomac River Entrance Weather Forecast

    • 78
    • 88

    Rain Showers Likely

    • 77
    • 85

    Increasing Clouds

    • 77
    • 86

    Chance Rain Showers

    • 75
    • 85

    Rain Showers

    • 75
    • 82

    Rain Showers Likely

    • 75
    • 82

    Rain Showers Likely

    • 74
    • 82

    Chance Rain Showers

Today 17 Aug St. Marys

Mostly sunny. Highs in the upper 80s. West Winds around 5 Mph.

Tonight 17 Aug St. Marys

Mostly cloudy. Scattered Showers and Thunderstorms, mainly this evening. Lows in the lower 70s. Northwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chesapeake Bay - Potomac River Entrance Temperature Statistics

August Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (9.3 miles)

  • Lowest 1 August, 2026

    69.1 °F

  • Average August

    80.2 °F

  • Highest 9 August, 2026

    91 °F

Climate (2021–2026)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (9.3 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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