Great South Bay Weather Forecast

    • 50
    • 62

    Increasing Clouds

    • 52
    • 60

    Mostly Cloudy

    • 48
    • 63

    Chance Rain

    • 49
    • 55

    Partly Sunny

    • 49
    • 58

    Mostly Cloudy

    • 50
    • 54

    Slight Chance Rain

Today 29 Apr Southwest Suffolk

Patchy fog early. Partly cloudy. Not as cool with Highs in the upper 70s. Northwest Winds 5 to 10 Mph, becoming south this afternoon.

Tonight 29 Apr Southwest Suffolk

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows around 50. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great South Bay Temperature Statistics

April Temperature

Islip, Long Island Mac Arthur Airport (8.1 miles)

  • Lowest 26 April, 2024

    33.1 °F

  • Average April

    50.2 °F

  • Highest 15 April, 2024

    78.7 °F

Climate (2019–Present)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Average Low 2019–2024

    47.3 °F

  • Average 2019–2024

    54.9 °F

  • Average High 2019–2024

    62.5 °F
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