Potomac River - Hollis Marsh Weather Forecast

    • 73
    • 82

    Partly Sunny

    • 73
    • 88

    Rain Showers

    • 69
    • 80

    Chance Rain Showers

    • 70
    • 80

    Mostly Sunny

    • 71
    • 82

    Chance Thunderstorms

    • 73
    • 83

    Chance Thunderstorms

Today 21 Jun Westmoreland

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

Tonight 21 Jun Westmoreland

Partly cloudy. Lows in the lower 70s. Southeast Winds around 5 Mph.

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Potomac River - Hollis Marsh Temperature Statistics

June Temperature

St Marys County Airport (14.9 miles)

  • Lowest 3 June, 2026

    50.9 °F

  • Average June

    75.1 °F

  • Highest 12 June, 2026

    100.6 °F

Climate (2021–2026)

St Marys County Airport (14.9 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    66.8 °F
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