Great South Bay Weather Forecast

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    Increasing Clouds

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    Rain

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    Rain/Snow Likely

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    Rain/Snow Likely

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    Chance Snow

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    Chance Rain/Snow

Today 17 Feb Southwest Suffolk

Cloudy this Morning, then becoming partly sunny. Highs in the lower 40s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph this afternoon.

Tonight 17 Feb Southwest Suffolk

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 30s. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great South Bay Temperature Statistics

February Temperature

Islip, Long Island Mac Arthur Airport (8.1 miles)

  • Lowest 8 February, 2026

    4.6 °F

  • Average February

    24.6 °F

  • Highest 14 February, 2026

    42.1 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (8.1 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63 °F
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