Potomac River - Calvert Bay Weather Forecast

    • 79
    • 95

    Isolated Thunderstorms

    • 74
    • 91

    Thunderstorms Likely

    • 71
    • 80

    Rain Showers Likely

    • 70
    • 82

    Mostly Cloudy

    • 71
    • 84

    Partly Sunny

    • 72
    • 85

    Mostly Sunny

Today 21 Jul St. Marys

Mostly sunny. Hot with Highs in the upper 90s. West Winds 5 to 10 Mph. Heat index Values up to 111.

Tonight 21 Jul St. Marys

Partly cloudy. Lows around 80. West Winds around 5 Mph.

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Potomac River - Calvert Bay Temperature Statistics

July Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.1 miles)

  • Lowest 9 July, 2019

    68 °F
  • Average July

    83.6 °F
  • Highest 17 July, 2019

    98.1 °F

Climate (2010–Present)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.1 miles)

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  • Average Low 2010–Present

    51.5 °F
  • Average 2010–Present

    59.5 °F
  • Average High 2010–Present

    67.2 °F
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