Stony Brook Weather Forecast

    • 44
    • 59

    Mostly Sunny

    • 44
    • 57

    Mostly Sunny

    • 42
    • 56

    Partly Sunny

    • 44
    • 54

    Slight Chance Rain Showers

    • 45
    • 56

    Chance Rain Showers

    • 47
    • 57

    Chance Rain Showers

Today 24 Oct Northwest Suffolk

Sunny. Highs in the upper 50s. West Winds 5 to 10 Mph.

Tonight 24 Oct Northwest Suffolk

Mostly clear. Lows in the lower 40s. Northwest Winds 5 to 10 Mph.

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Stony Brook Temperature Statistics

October Temperature

Islip, Long Island Mac Arthur Airport (8.7 miles)

  • Lowest 10 October, 2025

    42.1 °F

  • Average October

    61.3 °F

  • Highest 4 October, 2025

    82 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (8.7 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.2 °F
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