Chesapeake Bay - James Island Weather Forecast

    • 54
    • 63

    Sunny

    • 52
    • 61

    Mostly Sunny

    • 52
    • 60

    Mostly Sunny

    • 53
    • 62

    Mostly Sunny

    • 56
    • 63

    Mostly Sunny

    • 57
    • 65

    Partly Sunny

Today 22 Oct Dorchester

Sunny. Highs in the upper 60s. North Winds 10 to 15 Mph.

Tonight 22 Oct Dorchester

Clear. Lows in the mid 40s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Chesapeake Bay - James Island Temperature Statistics

October Temperature

Cambridge-Dorchester Airport (16.2 miles)

  • Lowest 18 October, 2026

    39.2 °F

  • Average October

    62.9 °F

  • Highest 14 October, 2026

    89.6 °F

Climate (2021–2026)

Cambridge-Dorchester Airport (16.2 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    66.6 °F
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