Chesapeake Bay - Calvert Beach Weather Forecast

    • 74
    • 83

    Chance Rain Showers

    • 69
    • 77

    Slight Chance Rain Showers

    • 68
    • 79

    Mostly Sunny

    • 71
    • 79

    Partly Sunny

    • 71
    • 81

    Chance Rain Showers

    • 67
    • 81

    Partly Sunny

Today 20 Aug Calvert

Partly sunny. A slight chance of Showers with patchy drizzle in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the mid 80s. Southeast Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 20 Aug Calvert

Mostly cloudy with patchy drizzle. Patchy fog. Lows in the upper 60s. East Winds around 5 Mph.

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Chesapeake Bay - Calvert Beach Temperature Statistics

August Temperature

St Marys County Airport (11.2 miles)

  • Lowest 4 August, 2025

    55.4 °F

  • Average August

    72.7 °F

  • Highest 17 August, 2025

    90.5 °F

Climate (2020–Present)

St Marys County Airport (11.2 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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