Great South Bay Weather Forecast

    • 61
    • 65

    Rain

    • 57
    • 64

    Rain

    • 50
    • 62

    Slight Chance Rain

    • 48
    • 58

    Partly Sunny

    • 48
    • 57

    Mostly Sunny

    • 49
    • 60

    Mostly Sunny

Today 5 Nov Southwest Suffolk

Mostly cloudy. A slight chance of rain this afternoon. Highs in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 5 Nov Southwest Suffolk

Mostly cloudy. A chance of rain in the Evening, then rain with a slight chance of Thunderstorms after midnight. Near steady temperature in the lower 60s. Southwest Winds 15 to 20 Mph. Chance of rain 90 percent.

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Great South Bay Temperature Statistics

November Temperature

Islip, Long Island Mac Arthur Airport (8.1 miles)

  • Lowest 1 November, 2026

    36.6 °F

  • Average November

    52.4 °F

  • Highest 3 November, 2026

    66.9 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63.1 °F
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