Long Beach (Stony Brook) Weather Forecast

    • 73
    • 81

    Mostly Cloudy

    • 67
    • 84

    Mostly Cloudy

    • 63
    • 76

    Mostly Sunny

    • 68
    • 75

    Chance Rain Showers

    • 68
    • 77

    Slight Chance Rain Showers

    • 66
    • 78

    Partly Sunny

    • 69
    • 77

    Partly Sunny

Today 9 Sep Northwest Suffolk

Partly sunny. Highs in the lower 80s. South Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 9 Sep Northwest Suffolk

Mostly cloudy. Lows in the lower 70s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Real-Time

Long Beach (Stony Brook) Temperature Statistics

September Temperature

Islip, Long Island Mac Arthur Airport (9.3 miles)

  • Lowest 7 September, 2026

    55.9 °F

  • Average September

    72.5 °F

  • Highest 3 September, 2026

    85.6 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (9.3 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
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