Chesapeake Bay - Long Beach Weather Forecast

    • 75
    • 89

    Chance Thunderstorms

    • 71
    • 80

    Chance Rain Showers

    • 68
    • 78

    Mostly Sunny

    • 68
    • 77

    Mostly Sunny

    • 70
    • 80

    Partly Sunny

    • 75
    • 83

    Partly Sunny

Today 4 Sep Calvert

Mostly sunny. A chance of Showers and Thunderstorms this afternoon. Hot with Highs in the lower 90s. Northwest Winds around 5 Mph. Chance of rain 50 percent.

Tonight 4 Sep Calvert

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the lower 70s. Northwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Chesapeake Bay - Long Beach Temperature Statistics

September Temperature

St Marys County Airport (10.6 miles)

  • Lowest 2 September, 2026

    71.1 °F

  • Average September

    79.9 °F

  • Highest 1 September, 2026

    93.9 °F

Climate (2021–2026)

St Marys County Airport (10.6 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    67 °F
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