Long Beach (Stony Brook) Weather Forecast

    • 38
    • 51

    Mostly Sunny

    • 46
    • 57

    Partly Sunny

    • 41
    • 58

    Mostly Sunny

    • 46
    • 54

    Mostly Cloudy

    • 55
    • 65

    Mostly Cloudy

    • 57
    • 73

    Mostly Cloudy

Today 9 Apr Northwest Suffolk

Sunny. Widespread frost in the morning. Highs in the lower 50s. Southeast Winds 5 to 10 Mph.

Tonight 9 Apr Northwest Suffolk

Mostly clear. Lows in the upper 30s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Long Beach (Stony Brook) Temperature Statistics

April Temperature

Islip, Long Island Mac Arthur Airport (9.3 miles)

  • Lowest 2 April, 2026

    39.7 °F

  • Average April

    50.5 °F

  • Highest 1 April, 2026

    72.6 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (9.3 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63 °F
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