Great South Bay Weather Forecast

    • 65
    • 66

    Breezy

    • 59
    • 73

    Partly Sunny

    • 56
    • 62

    Rain Showers

    • 49
    • 68

    Rain Showers Likely

    • 44
    • 53

    Breezy

    • 50
    • 55

    Mostly Sunny

Today 13 Oct Southwest Suffolk

Patchy fog this morning. Mostly sunny. Highs in the upper 60s. East Winds 5 to 10 Mph, becoming south 10 to 15 Mph this afternoon.

Tonight 13 Oct Southwest Suffolk

Partly cloudy in the Evening, then clearing. Lows in the mid 60s. Southwest Winds 15 to 20 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 7 October, 2026

    39.7 °F

  • Average October

    61.2 °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