Sumac Island Weather Forecast

    • 76
    • 87

    Mostly Sunny

    • 71
    • 92

    Areas Smoke

    • 71
    • 87

    Patchy Smoke

    • 67
    • 85

    Partly Sunny

    • 68
    • 77

    Chance Rain Showers

    • 67
    • 80

    Chance Rain Showers

    • 69
    • 80

    Chance Rain Showers

Today 14 Jul Southern New Haven

Mostly sunny. Highs around 90. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values in the upper 90s.

Tonight 14 Jul Southern New Haven

Mostly clear. Lows in the mid 70s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumac Island Temperature Statistics

July Temperature

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

  • Lowest 7 July, 2026

    60.1 °F

  • Average July

    75.3 °F

  • Highest 3 July, 2026

    93.9 °F

Climate (2021–2026)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    63.4 °F
Get WillyWeather+ to remove ads