Patuxent River - Prison Point Weather Forecast

    • 69
    • 77

    Chance Rain Showers

    • 68
    • 75

    Chance Rain Showers

    • 70
    • 81

    Partly Sunny

    • 68
    • 80

    Mostly Sunny

    • 68
    • 81

    Partly Sunny

    • 69
    • 81

    Slight Chance Rain Showers

Today 18 Aug St. Marys

Partly sunny this Morning, then becoming mostly cloudy. A slight chance of Showers this Morning, then a chance of Showers with a slight chance of Thunderstorms this afternoon. Highs in the upper 70s. Northeast Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 18 Aug St. Marys

Patchy fog in the evening. Mostly cloudy with a 40 percent chance of Showers. Lows in the upper 60s. Northeast Winds 10 to 15 Mph.

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Patuxent River - Prison Point Temperature Statistics

August Temperature

St Marys County Airport (9.3 miles)

  • Lowest 4 August, 2025

    55.4 °F

  • Average August

    72.3 °F

  • Highest 15 August, 2025

    87.3 °F

Climate (2020–Present)

St Marys County Airport (9.3 miles)

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  • Average Low 2020–2025

    49.6 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    66.7 °F
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