Long Beach (Stony Brook) Weather Forecast

    • 67
    • 75

    Patchy Fog

    • 69
    • 79

    Chance Rain Showers

    • 60
    • 78

    Partly Sunny

    • 60
    • 68

    Chance Rain Showers

    • 60
    • 71

    Rain Showers Likely

    • 60
    • 70

    Chance Rain Showers

    • 59
    • 69

    Chance Rain Showers

Today 16 Sep Northwest Suffolk

Partly sunny with a 30 percent chance of Showers. Highs in the upper 60s.

Tonight 16 Sep Northwest Suffolk

Partly cloudy. Patchy fog. Lows in the mid 60s. Southwest Winds 5 to 10 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

    56.6 °F

  • Average September

    72.1 °F

  • Highest 10 September, 2026

    86.6 °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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