James Island Weather Forecast

    • 78
    • 98

    Slight Chance Thunderstorms

    • 78
    • 99

    Slight Chance Thunderstorms

    • 80
    • 99

    Hot

    • 78
    • 99

    Chance Thunderstorms

    • 77
    • 97

    Thunderstorms Likely

    • 75
    • 93

    Thunderstorms Likely

Today 8 Jul Coastal Duval

Mostly sunny. Highs in the upper 90s. Southwest Winds 10 to 15 Mph. Heat index Values up to 108.

Tonight 8 Jul Coastal Duval

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 70s. Southwest Winds 10 to 15 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

James Island Temperature Statistics

July Temperature

Jacksonville Craig Municipal Airport (6.8 miles)

  • Lowest 2 July, 2026

    69.7 °F

  • Average July

    82.6 °F

  • Highest 4 July, 2026

    93.7 °F

Climate (2021–2026)

Jacksonville Craig Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    62.4 °F

  • Average 2021–2026

    71 °F

  • Average High 2021–2026

    80.6 °F
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