Sumac Island Weather Forecast

    • 65
    • 76

    Rain Showers

    • 67
    • 74

    Rain Showers Likely

    • 68
    • 81

    Chance Thunderstorms

    • 64
    • 80

    Partly Sunny

    • 60
    • 74

    Slight Chance Rain Showers

    • 59
    • 73

    Partly Sunny

Today 1 Sep Southern New Haven

Showers likely this Morning, then Showers likely with a chance of Thunderstorms this afternoon. Highs in the mid 70s. Southeast Winds around 5 Mph. Chance of rain 70 percent.

Tonight 1 Sep Southern New Haven

Showers with a chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the mid 60s. Northeast Winds 5 to 10 Mph. Chance of rain near 100 percent.

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Sumac Island Temperature Statistics

September Temperature

New Haven, Tweed-New Haven Airport (3.7 miles)

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Climate (2021–2026)

New Haven, Tweed-New Haven Airport (3.7 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    63.4 °F
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