Potomac River - Mattox Creek Entrance Weather Forecast

    • 73
    • 88

    Increasing Clouds

    • 68
    • 84

    Partly Sunny

    • 68
    • 79

    Partly Sunny

    • 69
    • 84

    Rain Showers Likely

    • 67
    • 79

    Chance Rain Showers

    • 61
    • 70

    Chance Rain Showers

    • 60
    • 64

    Chance Rain Showers

Today 17 Sep Westmoreland

Mostly cloudy in the Morning, then becoming partly sunny. A 30 percent chance of Showers. Highs in the upper 60s.

Tonight 17 Sep Westmoreland

Mostly cloudy early this Evening, then becoming partly cloudy. A slight chance of Showers early this evening. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Mattox Creek Entrance Temperature Statistics

September Temperature

St Marys County Airport (23 miles)

  • Lowest 15 September, 2026

    53.2 °F

  • Average September

    75.5 °F

  • Highest 1 September, 2026

    93.9 °F

Climate (2021–2026)

St Marys County Airport (23 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    67 °F
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