Potomac River - Smith Creek Entrance Weather Forecast

    • 68
    • 80

    Mostly Sunny

    • 73
    • 84

    Partly Cloudy

    • 70
    • 82

    Partly Sunny

    • 70
    • 79

    Partly Sunny

    • 71
    • 82

    Chance Rain Showers

    • 71
    • 80

    Chance Rain Showers

    • 69
    • 79

    Chance Rain Showers

Today 16 Sep St. Marys

Mostly cloudy with a 40 percent chance of Showers. Highs in the upper 70s.

Tonight 16 Sep St. Marys

Mostly clear. Lows in the mid 60s. South 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 7 September, 2026

    64.9 °F

  • Average September

    77.3 °F

  • Highest 1 September, 2026

    91.9 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    60.3 °F

  • Average High 2021–2026

    68.6 °F
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