Great South Bay Weather Forecast

    • 57
    • 66

    Mostly Sunny

    • 58
    • 72

    Partly Sunny

    • 57
    • 67

    Mostly Sunny

    • 61
    • 66

    Partly Sunny

    • 63
    • 67

    Rain Showers Likely

    • 59
    • 68

    Chance Rain Showers

Today 7 Oct Southwest Suffolk

Sunny. Highs in the mid 60s. Southwest Winds 10 to 15 Mph. Gusts up to 25 Mph this afternoon.

Tonight 7 Oct Southwest Suffolk

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Great South Bay Temperature Statistics

October Temperature

Islip, Long Island Mac Arthur Airport (8.1 miles)

  • Lowest 4 October, 2026

    55 °F

  • Average October

    65 °F

  • Highest 2 October, 2026

    79.6 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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

  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
Get WillyWeather+ to remove ads