Jupiter Island Weather Forecast

    • 76
    • 86

    Chance Thunderstorms

    • 76
    • 86

    Thunderstorms Likely

    • 75
    • 86

    Thunderstorms Likely

    • 76
    • 86

    Rain Showers

    • 76
    • 87

    Rain Showers

    • 76
    • 87

    Thunderstorms Likely

Today 19 Sep Coastal Martin

Partly cloudy with a chance of Thunderstorms. A chance of Showers late in the Morning, then Showers likely late in the afternoon and towards Sunset. Highs in the upper 80s. East Winds 5 to 10 Mph. Chance of rain 60 percent.

Tonight 19 Sep Coastal Martin

Partly cloudy. A chance of Showers and Thunderstorms in the late evening and early Morning, then a slight chance of Showers and Thunderstorms after midnight. Lows in the mid 70s. Light and variable Winds. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jupiter Island Temperature Statistics

September Temperature

Witham Field Airport (12.4 miles)

  • Lowest 7 September, 2026

    73.4 °F

  • Average September

    81.3 °F

  • Highest 5 September, 2026

    93.2 °F

Climate (2021–2026)

Witham Field Airport (12.4 miles)

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  • Average Low 2021–2026

    69.4 °F

  • Average 2021–2026

    74.6 °F

  • Average High 2021–2026

    83.1 °F
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