Potomac River - Mattox Creek Entrance Weather Forecast

    • 37
    • 53

    Becoming Sunny

    • 49
    • 68

    Rain Showers Likely

    • 47
    • 69

    Partly Sunny

    • 53
    • 75

    Slight Chance Rain Showers

    • 34
    • 65

    Mostly Sunny

    • 38
    • 51

    Mostly Cloudy

    • 41
    • 58

    Mostly Cloudy

Today 19 Mar Westmoreland

Mostly sunny. Highs in the mid 50s. South Winds around 5 Mph.

Tonight 19 Mar Westmoreland

Mostly clear. Lows in the upper 30s. South Winds around 5 Mph.

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  • Temperature Real-Time

Potomac River - Mattox Creek Entrance Temperature Statistics

March Temperature

St Marys County Airport (23 miles)

  • Lowest 13 March, 2026

    28.8 °F

  • Average March

    52 °F

  • Highest 11 March, 2026

    85.8 °F

Climate (2021–Present)

St Marys County Airport (23 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    66.6 °F
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