Stony Brook Weather Forecast

    • 53
    • 63

    Rain Showers Likely

    • 48
    • 69

    Partly Sunny

    • 53
    • 68

    Partly Sunny

    • 53
    • 67

    Rain Showers Likely

    • 55
    • 75

    Rain Showers Likely

    • 50
    • 71

    Chance Rain Showers

    • 51
    • 69

    Partly Sunny

Today 6 May Northwest Suffolk

Showers. Highs in the upper 60s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 6 May Northwest Suffolk

Mostly cloudy. Showers likely with isolated Thunderstorms this Evening, then scattered Showers after midnight. Lows in the lower 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest 5 to 10 Mph after midnight. Chance of rain 70 percent.

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Stony Brook Temperature Statistics

May Temperature

Islip, Long Island Mac Arthur Airport (8.7 miles)

  • Lowest 1 May, 2026

    40.6 °F

  • Average May

    53.6 °F

  • Highest 4 May, 2026

    64 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (8.7 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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