Chesapeake Bay - James Island Weather Forecast

    • 71
    • 77

    Becoming Sunny

    • 71
    • 79

    Partly Sunny

    • 71
    • 79

    Partly Sunny

    • 73
    • 79

    Slight Chance Thunderstorms

    • 75
    • 82

    Chance Thunderstorms

    • 75
    • 83

    Chance Thunderstorms

Today 23 Jul Dorchester

Mostly cloudy with a slight chance of Showers in the Morning, then partly sunny in the afternoon. Highs in the lower 80s. North Winds 5 to 10 Mph. Gusts up to 20 Mph in the morning. Chance of rain 20 percent.

Tonight 23 Jul Dorchester

Mostly clear. Lows in the mid 60s. East Winds around 5 Mph.

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Chesapeake Bay - James Island Temperature Statistics

July Temperature

Cambridge-Dorchester Airport (16.2 miles)

  • Lowest 13 July, 2026

    62.6 °F

  • Average July

    80.5 °F

  • Highest 2 July, 2026

    98.6 °F

Climate (2021–2026)

Cambridge-Dorchester Airport (16.2 miles)

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  • Average Low 2021–2026

    49.1 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    66.7 °F
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