Potomac River - Smith Creek Entrance Weather Forecast

    • 65
    • 77

    Chance Thunderstorms

    • 65
    • 71

    Rain Showers

    • 66
    • 72

    Rain Showers Likely

    • 65
    • 75

    Slight Chance Rain Showers

    • 66
    • 80

    Mostly Sunny

    • 65
    • 76

    Partly Sunny

Today 15 Sep St. Marys

Partly sunny. Highs in the upper 70s. Northeast Winds 10 to 15 Mph.

Tonight 15 Sep St. Marys

Partly cloudy. Lows in the lower 60s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Smith Creek Entrance Temperature Statistics

September Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (2.5 miles)

  • Lowest 1 September, 2025

    55 °F

  • Average September

    69.7 °F

  • Highest 6 September, 2025

    89.1 °F

Climate (2020–Present)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (2.5 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    69.2 °F
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